Dropbox seems to be different than other companies. It is known to have migrated back from AWS to their own infrastructure at a time when ever other CEO was propagating to migrate into the cloud. Article is from 2019, though: https://techcrunch.com/2019/06/21/three-years-after-moving-off-aws-dropbox-infrastructure-continues-to-evolve/
I guess it is like bicycling: there is a price to pay in blood 😉 My suggestion: in Romania, take a few hours of driving lessons with a professional teacher who can explain everything to you.
There is a Swedish short movie about a similar incident about 20 years ago: https://m.youtube.com/watch?v=1hvo3QOHtaA
Microsoft tried the same idea about 10 years ago with Continuum, even including a hardware dongle: https://en.m.wikipedia.org/wiki/Windows_Continuum https://learn.microsoft.com/en-us/windows-hardware/design/device-experiences/continuum-phone
Canonical had something similar, too, back in the days with their Ubuntu Touch and named it Convergence: https://www.linux.com/news/first-ubuntu-touch-tablet-brings-convergence-last/
I fear many won’t understand the reference here.