So in my imagining of how this would work out I think you could buy it outright maybe if you wanted and avoid the subscription OR get it subsidized somehow where insurance or government or facility you're in pays part or most of it and then you would be stuck with the subscription model for using it. Kind of like you lease it from them, sort of. I could maybe even see where if you buy it outright you don't pay the subscription but upon death it goes back to the company/facility but I think that will be a new way of doing things. It might even be a part of the condition for the overall subsidization of the industry. This is all just guesses though but I don't think its that unlikely if you think like a greedy VC.

The reason they would do this for this technology in particular is because the end goal would be having no more cnas and stuff like that you would eventually after many many years of perfecting the technology be able to have these robots do all of that.

The long term projected profits will be insane. Again, this is just my guess but I believe it would work out very similar to this.

Edited to add: this isn't JUST about helping the elderly BTW. The long term goals would be (again many many years down the road) for these things to replace heart surgeons and nurses and the like for everyone. No more pesky malpractice lawsuits or high wages to pay, just a deal with the company that makes these things. The goal really isn't to help anyone except the people who own this or get involved by making them rich but it will be presented that way (X% success rate much higher than human doctors or surgeons!, no more elder abuse at nursing homes, etc)