In the long run, I think we'll see more iPad-only families. The home computer is practically non-existent outside gaming niches or work-issued machines. We've had $700-800 Macbook Air models on sale for years now, same for the Mac Mini - little has changed. As cutesy as the shared computer ideal is, I see most people gravitating towards their phones and away from general purpose computing.

The problem is work is done mostly on computers though. Will it evolve to be all on tablets? It's possible, but will make workers slower

I thought the tablet space is pretty much dead? I don't see many on the shelves at the local hardware store (which I walk by mostly of curiosity). It seems all laptops, with a sizeable share of foldable - and even these are way more present than tablets. So no, I think the tablet train has long left (exception being the standing workers in some areas).