How did projects get staffed? Was that senior mgrs allocating staff to winner proposals? The article mentions "Most great innovations at PayPal were driven by o

How did projects get staffed? Was that senior mgrs allocating staff to winner proposals? The article mentions "Most great innovations at PayPal were driven by one person who then conscripted others to support, adopt, implement the new idea.". I am wondering how "conscripted" worked. It also mentions "Vigorous debate, often via email: Almost every important issue had champions and critics. These were normally resolved not by official edict but by a vigorous debate that could be very intense." It looks like David Sacks was successful at shaping a product-driven culture there. Is the implication that innovation and project allocation was coming out of "product"?