> But you need lots of power to run a browser nowadays.

Quite right; the vast majority of "actual work" that one would do locally on the machine, requires a lot less power than booting up a web browser and surfing to a random "modern" website. Funny how that works.

We're all forgetting about the 'real' work that we routinely do on our computers, because that kind of thing has gotten so rock-solid and doesn't even measurably tax compute resources - even as browsing the web, of all things, has only become increasingly fiddly and heavy on our systems.