I was initially building my social project via drupal and got very far before i switched to Dolphin. Dolphin is a good but not great package in that it lacks a ton of documentation, the admin interface lacks any admin features and everyone is more focused on making money of mods that actually writing good mods. That is where Drupal beats Dolphin hands down. You can get anything you want, anytime, anywhere. But Drupal as a social platform is not yet fully mature unless you are going the long mile see more (google: popsugar). The first thing Dolphin needs is a solid community providing a ton of apps. Free ones. With limited features. Then premium for a price. And that isn't there.

Support as a premium? A lot of people will argue and say but we have our community, but then look at the Drupal Community and look at what they do, and look at Dolphin and see what they do. I have no problem paying for apps, but first things first. Rudimentary first, then worry about extras later.