If you don’t like ME saying it — here is VITALIK HIMSELF saying it, the guy is quite honest and straightforward about its limitations: https://thenextweb.com/hardfork/2019/08/19/vitalik-buterin-e...
Vitalik Buterin: Using Ethereum is expensive, and its blockchain is ‘almost full’
He also said blockchain's 'problem' is that every computer verifies every transaction
Actually Ethereum 2.0 should be “fast enough” for many applications. It’s still going to be doing a global consensus, but at least it will be able to handle actual real world usage - people paying for coffee, let’s say, or voting in elections.
In fact, a major reason that so many ICOs from 2017 were considered scams is that the tokens could not actually be used for their intended purpose. Teams like Kik Messenger discovered this early on and moved away:
https://medium.com/kinblog/kin-pushing-ahead-next-steps-on-t...
[0] https://www.forbes.com/sites/kellyphillipserb/2019/09/19/por...