Does the phrase, do your homework ring a bell?
If you actually read the replies from Aaron Giles, I tried several times to contact the MAME team for help in putting a stop to people that were building and selling MAME based cabinets with no permission and no licenses for the games. After no response I filed the trademark in an effort to stop the unfair and illegal competition. I also transferred the trademark over to the team on my own accord, even though legally I could have kept it. If my effort was to steal the mark, I would have succeeded, and still owned it to this day. However, that wasn't my goal or attempt. Aaron confirmed this and my actions led to the MAME team cleaning up the commercial use of MAME, and it was good for the team and the community.
In order to understand this, you would have to educate yourself, and most people can't be bothered, instead they want to just run around and make uneducated flames about how evil I am. If you are too lazy to bother to understand the facts about something, so be it.