If the info on the website is the idea. It's way too expensive for the use cases listed. I don't think a robot can do most of the things listed, certainly not better than a human. I also don't need extensive training, and a few hours, to learn how to operate a human I hire, they presumably know more than me and I just point to the problem and they take care of it better than I could even explain.
So I can rent for up to 3 months, with a base cost of $1,042. Estimated price to buy my own starts at $25,000. Are people going to pay $93k to rent a $25k robot for 3 months?
You mention hacking the rented robot. That would certainly violate the terms of the rental would it not? How can a rental company send it into someone else's home when the person before spent their time doing who know's what to it's programming? That could be very dangerous.
The only way this works is for on-off specific tasks that the robot is purpose built for... like renting a carpet shampooer from the grocery store. Make Roomba version of a carpet shampooer and people will probably rent that for $60/day instead of the $40 for the manual one.