You wrote: <<I've seen beautiful native apps that require an internet connection all the time, because they save every little piece of data on a remote server and sometimes, the whole thing is super unresponsive.>>

I have see this multiple times for enterprise software. It works when the data center is on the same continent, e,g., New York to Chicago or London to Frankfurt, or Santiago to Sao Paulo. Now add 20km+ roundtrip on fibre -- Tokyo to London. It is a horrible user experience. I have seen teams trip over that wire (pun intended) more than once in my career!