I am developing HALAC and HALIC as a hobby and I don't expect everyone to use them. I'm happy when I can get good results, and it's bad when I can't. I say this as someone who has been dealing with data compression for 9 years.
Obviously, it's your right to decide... but especially if you think of it as a hobby, why not release the source? It would make your work much more valuable for a lot more people.
When I bring my work to a certain stage, I would like to deliver it to a team that can claim it. However, I want to see how much I can improve my work alone.
The amount of media playback and serving software out there is innumerable. If most of it doesn't handle some obscure format, that format is screwed.
Getting a new format everywhere is a difficult battle; the adoption barriers are high. Even if the thing is completely royalty free, and comes with a great, open source reference implementation.
Something that is closed, and has no backing of some corporate consortium or ITU type body or whatever, is basically fucked.