I'm curious about what apps would be available since PWA is something new in the app industry and also, how will developers sell their apps? If it's lightning fast I might accidentally buy something I don't want.
I think you have to be very careful if you don't want to buy something that you don't want. And besides, there is always a confirmation for all purchases that we buy. Sometimes, there are many confirmations just to be sure that you are really interested to buy the product. If you haven't entered anything using your credentials, I don't think, they will push with the transaction.
That's why in this industry everywhere there is risk, and with it we really need to think several times before we get in to any project. Now in
regardless of PWA it may not be as stable like what other competitors but I know in just a couple times they can increase their value in just a
short period of time. Because it can give us a good experience as a users.
You are right about thinking several times before we go into something. This action will prevent you from committing wrong decisions. But Progressive Web App (PWA) is already proven system for applications. The Giants just want to take hold of the market, this is the reason why they are spreading fear on using something new.