To be fair, many roombas have a mini DIN connector somewhere, which opens up the possibility for external control - what I plan to do when mine stops working due to server shutdown. However, getting replacement parts will get more and more tricky as time goes by.

I just had to through out a mostly functional airfryer because the drawer rail disintegrated and the replacement part is no longer manufactured. The oldest one I could get was a “new” version with more plastic and a slightly bigger size, so it didn’t fit by about 5%.

It really should be illegal, there is no logical reason for 500 slightly different models and inoperability of basic functions (drawers, APIs, …) aside from malignant greed and planet destruction.