This is exactly the reason why NYC is an awful place for technical founders, and part of the reason why I left. Zed Shaw has blogged about this incessantly - even when someone tries to recruit you as a technical cofounder, the usual treatment you get is "Look, you like making technical decisions? Great! All the technical decisions will be yours. You will be my pet technical-decision-making code monkey, here's 10%". Yuck.