Is Paypal free?
yes it's free to have an account not only that you can actually use that account to make transactions unlike with bitcoin where if you want to make transactions it cost something. why do you think people use paypal on ebay?
Is using a bank account free?
yes there's lots of free checking accounts from different banks.
Why would blockchains have to become free?
they wouldn't have to but if they want to attract a large user base it might be in their best interest. otherwise they might fall away into obscurity oneday.
Is there any payment infrastructure/system, that has zero maintenance costs, therefore there aren't any transaction fees in that system? I don't think so.
it's called value added services. you make the base services free but have premium services that are not free. ever heard of robinhood stock trading?
Comparing blockchains to Google and Facebook is like comparing apples to bananas. Does Google and Facebook provide financial services?
Does Google and Facebook have their own currencies.
facebook tried to get its own cryptocurrency and if they had done it it probably would have outstripped bitcoin in popularity. how many users does facebook have? how many does bitcoin have? case proven.
What the hell is a "pay-to-use" blockchain?
you know what it is. we all know what it is. why pretend you don't know?
Are there any blockchains, where the users have to pay an upfront fee, in order to gain access and use the blockchain?
it depends on how you define "use the blockchain" but for the vast majority of people it would mean conducting transactions.
How the replace the transaction fees in the blockchain? This guy is totally incompetent in regards to crypto, but he has opinions about it.
What a joke.
so someone has to be competent to have an opinion? well if that's the case then maybe crypto has too big walls for entry. like with paypal everyone knows how paypal works so they don't need a phD in mathematics.
firstly all users need to retrieve their UTXO from somewhere to then form tx's to spend value. but if full archival nodes are only transmitting data to paid partners(lite wallet server owners) then those paid partners will pass on their 'costs' to end users.. EG lite wallets and full nodes charge customers to retrieve their UTXO's (much like banks charge to receive bank statements/ATM balance checks)
man if that day comes then bitcoin is doomed.
doomed, i'm telling you!