In the PDQ game system, "Loot" is awarded by the GM with ratings similar to the FATE skill ladder (Average, Good, etc.). Each time the player uses the Loot, they make a check based on how expensive their purchase is, and if they lose, then the "Loot" gets downgraded by a step until it gets to at or below 0/Mediocre.
So, the GM could award the player a "phantom" Resources skill, and each time you make a roll, have a risk of the skill ranks dwindling unless you are using it for items which are easy to acquire at that Resources level. Buying that expensive car would probably eat all the ranks up, but buying dinners, taxis, modest gifts, etc. might never even touch the skill.
But the DFRPG game rules are about narrative impact, and generally, if that money is going to have an in-game impact, it should be reflected within the character build. A wealthy investor PC spent a lot of skill points to get a high Resources.
Of course, one could make a case that this money will ultimately be used to benefit the entire group and their goals, but it could also be seen as unbalancing. What does the rest of the gaming group think?