Hasn't it been established that that New Jersey had to compensate NYI, NYR, and PHI in exchange for allowing the relocation and territory encroachment to take place? Anaheim had to pay half of their $50M expansion fee straight to Los Angeles in exchange for it. Brooklyn isn't in the league anymore. If you're referencing NYI, they had to pay NYR who required it because it was back when NYR wanted to own the market all to themselves and that's what it took to share, in addition to the "we could go to WHA" stuff but that's besides the point.
And Sunrise isn't in *anyone's* territory, so I'm not sure what you're getting at there.
So yeah, at one point they did have the veto. The territory encroachment fee, and however steep it is, is the price the territory-owning team says they are willing to give it up for.