Unfortunately no, all the feeding sites seem to be commercial operators with little incentive to open the feeds up.

I think it would be fun to build something like that though, the AIS equivalent of adsbexchange.com.

You can trade AIS data with other people. The range is pretty good, but if you want to see anything out in the ocean you need one of the commercial providers who has a feed from a satellite.

For access to more community-driven data out there, check out aishub.net. If you're able to operate a base station and contribute back, you should be able to get what you need.