A fair few potential founders would be able to find a few tens of millions from friends and family, but a lot fewer can find a hundred bucks. If you're backed by a big name this isn't a problem, hence you still get the occasional massive launch.
The part about the fees is also pretty important. 2/20 is from tales of yore. Any significant ticket will ask for a discount as well.
So it's just that much less attractive to launch.