I'm not 100% sure if memory serves me well here, but didn't we once have an event competition with a buy-in? I think that the community feedback wasn't too good back then, but maybe with a different business model it could be something that becomes the norm. Now if we wouldn't have to pay for memberships any more (which has not been confirmed), charging a small amount as a buy-in for certain competitions might be something they consider.
All speculation of course.
I would not have a problem with a small buy in to an event or comp assuming of course the buy in went towards a worth wild prize pool.