Is there any disadvantage from the investor's perspective if a team sets a target to break bank once 50% of the starting bank has been won instead of waiting to double bank?

For example, if the investor was to put up 50k, the team breaks bank after 25k has been won. Doubling a bank requires a great deal of time, and setting a smaller target means both players and investors see a payday much faster. Moreover, the chances of hitting target also improve with this approach.

Beside a smaller ROI for the investor, what is the downside?

MJ