The problem is as we always want it to be a free to play game we do not have the stable currency to pay out.
STARPRO is limited to just 100 a day (maximum but often less with the latest update) and as we add more features that require it so more STARBITS have to be burned to get the same amount of STARPRO. We have already seen this happen but we still need to keep adding more features that increase the demand for STARPRO so it happens even more.