There is more to it than having ideas.
Hiring someone who has no idea how to do the job would mean waiting months to detect that, firing them and then starting to look all over again. Complete waste of time.
With a VC, its simpler, if the start-up has a good idea with a good plan to execute, then the risk is only money. If the start-up does well, both of them make money. But if the startup screws up, then you lose your investment, and move and invest in other companies. It's different with hiring a VP. If you're a VP and you do well, you help the company grow. But, if you screw up, you've just ruined your company and its employees' which could potentially affect tens or hundreds of your subordinates' futures AND especially their families, and with some screw ups, you can't even use money to fix it.
If you can't distinguish between those two things, then you're going to be a crappy vp if you ever make it.