They decided to attempt a complete rewrite of the mod. It's about half-done. Yes, stupid decision, seeing as a 1.6.x port can be done in a weekend for any mod.
I wish I could make a startup, but I'm only 16... although I do have the AsieLauncher - which makes launcher creation and mod cataloguing easy, I also have contacts within the modding group with people willing to join such kind of project... But I can't take any money for it, which kind of misses the point.
An easy way to charge for Minecraft mods would be to create a Flattr-esque system for server owners: you pay a flat fee for servers, set based on server size, and the fee is proportionally distributed between mod authors, who in exchange ensure that the mod versions in the database are okay and that the configuration is in a specific format that makes it easy for the launcher to generate a server- and client-side config that just works (though "ID hell" will be gone with 1.8, when they fully make a move to referring to blocks by names and not IDs).
AsieLauncher Wiki URL: https://github.com/asiekierka/asielauncher/wiki
EDIT: We also have a serverlist! http://servers.asie.pl - and our mod database is viewable at http://servers.asie.pl/mods (I apologize for the Bootstrap)
EDIT2: Meet me @ #AsieLauncher on irc.freenode.net