Ehh... this is not a smart way to look at it in my opinion. I do think syscoin is a good gamble and have money invested in it, but it's just that, a gamble. Buying up as much of QBK as possible at 50% price is a guaranteed 100% return on that money as it was already sold at .0002.
If they don't take a guaranteed 100% profit, it's bad management imo.
It only makes sense for them to do that if they then turn around and burn the coins. Otherwise, people would complain of the devs basically sitting on a giant stash of coin, similar to a premine. You don't want any single group holding such a large percentage of the overall coins.
So yeah, it could increase valuation... maybe. Or maybe not.
If they simply treated it like a regular investor would, perhaps it'd be a good bet. But then people would complain they are sitting on 250K coins (or however many they buy).