I think it will always be a speculative activity to think about what if situation. What are the interests of institutional investors and pension funds? The sole objective of pension funds and other big players are not to make stellar returns for pensioners. A return objective of 2 to 3% is all they need to provide the continuous cash flow to pensioners. They are not willing to take an unproven risk in Steemit and the likes.
Furthermore, if all the money were to rush in, who will be the ones rushing out of the platform? Hope is definitely not a strategy.