It's not just parents that kill off pairs; it's mostly the American mentality. The mentality is very much "the individual must make it." Although Americans love team sports like "football", basketball, and baseball, amongst those team sports, they identify individual stars. These individual stars are always praised. It's one of the reasons why the US hasn't done well in the World Cup since its inception. A team like Germany plays like a team. In pairs, we rarely get the sense that they're skating as a team; we get two singles skaters who happen to lift. The current rules actually favor the american mentality (harder jumps in pairs, singles-like spins/footwork sequences), but very few pairs want to skate as one.
Sorry for taking this thread in another direction. Back to Frank Carroll-- I think I like his new role, and it isn't a conflict of interest, at all. Many of the successful skaters have taken from Frank before, at their coach's urging. Polina Edmunds works with Frank from time to time. Chris Caluza of the Philippines has a primary coach in San Diego, but will solicit Frank's advice. I think what USFSA is doing is making official this practice of seeking advice from Frank

When Carlo Fassi was alive, he actually wanted to do something similar. Other coaches were afraid to do that, however, because Carlo was known for "poaching."