v4v is cool but corporations are willing to pay more for a skilled developers time. It then becomes hard to justify putting in the hours for such a small reward. This might not be the case if you have a large social media presence and can get eyes on your work and people to promote you. Most developers don’t have this. There’s a lot of passion in this space so it kinda works but you are still missing out on the majority of the talent pool with that model.