Umm Not Sure . This may work for Posts which are written or photographs taken by people on their phones and DSLRs .

But what if Steemit platforms actually end up growing to the point where it competes with youtube and people who make professional videos by investing money come on board. Content like documentaries , Short Films etc are Expensive to produce.

Would the growth be so massive with the above mentioned model that 10-20% reward will compensate the costs ? I am not sure .....And in case the costs don't add up steemit will become the dumping ground of global content while Quality content moves to other more profitable platforms ....