Robots which do this are already cheap and widely available, I see them everywhere.
Snow blower robots seem to be a thing too, not sure how useful are they. Racking leaves is probably also solvable problem.
It just seems that it might be more effective/cheap/viable to have a bunch of way more simple specialized 'robots' than a very complex/expensive general purpose one.
Also like Roombas (the brand, not robot vacuums in general) they have poor sensors and no real coverages algorithms, they just semi randomly roam around.
Battery life is also terrible, outdoor charging stations are harder to maintain etc.
All I’m saying is, there is a long way to go before they become defacto better than a person with a mower, they are a fair bit of work and fuss right now to set up and keep running.
Husqvarna supports that, but yeah it might struggle on very complex areas (I've only really have any experience with it on fairly simple lawns). It's certainly not just randomly roaming around:
https://www.youtube.com/watch?v=KLdSLJu8acg&ab_channel=Husqv...
I'm not even sure what other brands exist. They seem to completely dominate the market where I am.