I can't guess people's intentions, goals or ideals, each person thinks different and that's okay to me, every open source project demands work, effort, time and money... What kind of benefit gets those people who work on open source projects? I don't know, you have to ask them, I asked to you because I don't what kind of person you are or what intentions you have!We aren't going to share it as open-source(too many years of work, what kind of benefits would give?), about selling there is no plan to sell it but we will see at future, there is many ideas about what we will do, but of course sharing it for free as open-source isn't one of these ideas.
Regards :
Okay, I'll be waiting until you know what you want to do. I think selling the source code will be really good, another option is to sell your custom server and client with a monthly fee as IGC does, I'll be very interested in any of these options. Also, me and my partner currently have a MuOnline community, we are both entrepreneurs and developers since a long time, so if you're searching or interested in some kind of partnership let me know.
Thanks.
Best regards.