Freebitco.in isn't just a faucet. It's also a gambling platform. They make income from multiplier and sports/events betting. That is how the site has been kept sustainable and profitable along the years. It's not possible to compare this site to other random faucets which don't offer any additional features to users, neither benefits such as investment. The main issue here is support, which is barely non-existent. All the other features are working fine.
Moreover, faucet's rewards aren't static. They keep fluctuating as BTC gets more expensive or cheaper. That is how the platform controls the sustainability of the feature, besides always checking for fraudulent claims from bots and cheaters.
FreeBitcoin.io also has a gaming platform in it, where users can play and go up levels to open up rewards. It might be a "random" faucet for you but it has been in business for 6+ years, the social media accounts can testify to that (twitter, telegram, youtube, instagram).
Yes, gambling keep the business sustainable and profitable, however you might want to get rid of the bad players that can literally drain these profits unless you change the model.
The FUN token price is a great testament of how well investors and others look at the product. Compare it with BFG from BetFury for instance. Both are gambling platforms, BetFury also gives out free BTC with their boxes, however they don't give out as much as FreeBitco.in does.
There are far better things to look at, it's not only to say "at the moment all is fine and it's working for me", we're running a similar business so we know what they're going through, you can look at the web for the number of bots users created to drain profits out of them, have you seen anyone trying to drain BetFury's Box/Faucet?
This is important, even more than anything else!
If you don't take care of it you would only grow your database with crappy accounts, more and more support tickets, and yes, you could also end up with more issues like mentioned here:
https://www.mouthshut.com/review/Freebitco-review-lmoputmttsoIf I was an investor and I had to invest either in FreeBitco.in or BetFury, in FUN or in BFG - I don't think I would have any doubts where I'd invest. And btw BetFury is paying double digits % on their token. Their support is top notch.
Please no personal offense, this feedback is given purely with the intention of helping them shape the business and not ruin it.
When legitimate users' instant withdrawals are no longer instant and there is no support - it would make lots of users worry.