The only supply side outage that comes to my mind is the Texas cold snap messing with the gas plants.
It's very unlikely that a centralized grid will go away, society wants 100% energy availability 100% of the time. So like everything else, people are just going to have to pay for it. The same way you pay for schools even if you don't have kids or pay for roads even if you don't have a car.
The strategy that I like is to build out distributed systems in "non-integrated areas". These are locations that are not served by the grid and often have a tiny local grid that provides high cost electricity (~1$/kWh). These areas represent test beds for distributed energy tech and might be a place where de-costing and scaling strategies could be developed.
Another strategy is to wait for baby boomers to die. :)
State of the art moves quickly not long ago projects were budgeting for new batteries every 5 years in order to be able to meet energy guarantees