Some would use that money and time to start a competing company :)
But also, setting up a competitor is definitely violating noncompete. If you look at how actual firms started (basically all of them start from people leaving other firms) the founders waited out noncompetes. It would be a waste of money and potentially scare off investors by risking getting massively sued.
The things people normally do are like:
- go travelling, especially to places less well suited to short trips. Hard for people with partners who don’t want to stop working for a year or two.
- learn/train for something. Eg maybe requires a bunch of courses or maybe just a lot of time and effort.
- some combination of the above, eg mountaineering requires a certain amount of training/fitness as well as long trips
- some kind of civic/vocational thing where you’re applying professional skills from work but not IP, eg taking a more active role as a charity trustee
- spending more time with kids/other family
- working for some non-competitor like Google for a year.