I'm copying a reddit post
https://www.reddit.com/r/siacoin/comments/70gtil/why_is_only_80tb_of_the_network_utilized_sia/dn3utc4/ that might be of interest for you all.
Let it be clear that, in my following statement, I am not bashing the developers, the program, or anyone, as I know they are very diligently working on progress/coding/development/etc. I'm just offering my view as someone who is big into computers, personal data storage (24TB usable, way too close to full), went to a tech school, and can see into the world of the more computer adept and the world of those who just use technology to login to Instagram. I personally love the concept behind Sia and am rooting hard for it to succeed in the long run.
I think there are several barriers to more widespread usage that need to be addressed before we see that utilization we all believe dream of, and I'm going to address the concerns towards normal consumer use right now, so all of the following pertain to people like your mother/father/sister/brother who aren't 1) into crypto and, more importantly, 2) use the computer to check email, Facebook, IG, and play flash games:
Note added at the end: Most, if not all, of the following points reference consumer use and Sias competition vs Google Drive and Dropbox. I do this because I see that most comments about Sia's future revolve around toppling either consumer use of those programs OR enterprise adoption. Perhaps I am misunderstanding the scope of Sia and regular consumer use is not the focus. For now, my focus is on that consumer adoption for use as warm or hot backup and file sharing, not as cold storage or enterprise adoption.
1) Most importantly, ease of set-up and initiation:
Right, to begin storing files on Sia goes like this: Download Sia wallet --> sync entire blockchain (hours to days of time) --> open Coinbase account (wait days+ to get authenticated and activated) --> buy BTC/LC/ETH (instantly or up to a week depending on funding method) --> transfer to Poloniex (or another exchange that trades SC) --> trade for SC at current price (I'll touch on this more later) --> withdraw coins into personal wallet --> Create allowance (and understand that failure to pay may result in loss of data) --> wait for 20+ contracts (variable length of time) --> upload files through client. All-in-all, you're talking about a few days (I forget how long CoinBase/Gemini activation took) to 2 weeks to even begin uploading files. In comparison, starting with no account, you can start uploading to DropBox or Google Drive in 10 minutes if your connection is slow. Yes, the more technically involved people may already have some crypto to exchange, or don't mind the wait if they're going to use it for cold storage/offsite backup, but that's a small group compared to the overall user base of Drive and Dropbox.
To me, the first hurdle is this: making Sia crazy easy to set up: Install wallet, buy SC with fiat directly from the wallet, make blockchain sync wildly faster or unnecessary for initial upload, and allow for upload of files immediately, perhaps some kind of local cache that automatically begins to upload to the Sia network once contract requirements are reached. Once normal consumers can set up Sia as fast/almost as fast as other offline clients, then they might start joining.
2) Second, ease of use:
DB and GD create a local folder that functions like any other folder on your computer that you can manipulate as you are used to (drag-n-drop, delete, rename, open file in place). Sia operates only through the client, making it less convenient for daily use.
I will add to this the note for users like me (shout-out to r/datahoarders) who have higher-than-usual (sane?) amounts of personal storage who are always looking for offsite/cold-storage: some way to auto-synchronize servers worth of data without manual intervention would be huge. Personally, this is why I don't use Sia for offsite/cloud backup: I have 20TB of data across multiple mapped network drives that I will not go through daily/weekly to update with the latest state of my files. I already have SC, I already have exchange accounts, and I've already synced the blockchain. This is my last big hurdle to at least testing adoption for long-term use.
3) Cost of Use
GD and DB have free tiers where small quantities of data may be stored. Sia does not have that. Even if the price/TB is miniscule, people (in my observation) tend to avoid making ANY payment for a subscription unless there is an increased benefit highly relevant to them.
Additionally, there needs to be a convenient way to cancel the contracts. Right now, I'm not even sure how to do that.
4) Method of payment, specifically price fluctuation
Crypto as a whole is extremely volatile right now. Prices fluctuate all the time. This means the cost of the storage is ever-changing. What costs $0.50 right now may be $2 tomorrow because of Sia network utilization and SC price fluctuation. Again, these prices are WAY cheaper than current storage per TB but I don't believe that people will want to put in $10USD for X amount of storage for 2 months and in a month find out that now that's going to cost $20.
In Closing
As I noted above, these issues are all regarding mainstream consumer adoption from those who might migrate from DB/GD/etc. For enterprise adoption, or cold-storage/offsite backup, these may or may not be relevant, and there other issues to consider. I would love to discuss any and all thoughts posed above as I personally love Sia and would love to adopt it fully myself (who doesn't want another 20+TB of network utilization?) and I would absolutely love to see Sia take off.
As a last aside, thank you to all of the developers and supporters, I know you're busting your asses and I look forward to this crazy ride.