I'm pretty sure AWS has a better track record than Google when it comes to keeping old crud alive for the benefit of its customers.
In my experience AWS generally gives at least a year's notice before killing something or they offer something better that's easy to move to well in advance of killing the old.
Couldn't you consider older people living on Social Security to be somewhat of a UBI microclimate? I'd imagine you could learn a lot by sending the same questionnaire to them. A lot of the mental factors are the same: desire vs. ability to work, the changes in routine pre and post income, etc.
Also, I wonder if we had UBI there would be facilities that would take care of you if you turned over your income check to them in the same way that some nursing homes do. One wonders how different this would be than a minimum security prison....
https://boardgamegeek.com/boardgame/31481/galaxy-trucker