We're looking for investors with 'pockets' that are deep enough to pay for the project. [=investors with enough money to pay for the project]
People 'vote their pocketbooks'. [=people vote according to how a candidate or issue will affect their financial situation]
It turned out that they had 'pocketed' [='stolen'] most of the money that was supposed to go to victims of the fire.
(..) Move it! For my first trick... I'II do something for you, son. We have a giraffe. There you go, son. Now get out of here, you bother me. Now... Sorry, wrong pocket. For you... a IittIe body EngIish. A French poodIe. The dog was rabid, had to put it down. At Iast but not Ieast, my favorite. (..)1994 The Mask