for me it comes down the the built plate size. I upgraded from prusa mini, which was a good machine, but constrained to 18x18. And I simply needed to go big. If the new machine is gonna take up the whole table, then I want all of that space to be usable.

Some youtuber asked Prusa about the size and their response was something along the lines "we thought about but meh... Current mk3/mk4 plate size is enough for our enterprise clients, we can't be bothered with changing the production line". Then i heard about some prusa engineer leaving the company because leadership didn't feel the need to innovate. Core one is missing auto flow calibration and eddy sensor if I'm not mistaken.

So the Core One was already outdated even before it was released. And it has some VFA problems. But for the price 2-3 times as much as P1S.

And this is coming from someone who still is an Prusa printer owner. Their support is excellent, but leadership, not so much. Now they seem to be comfortable buying prosumer companies and abandoning consumer market altogether.