There is a ton of platform bashing going on in this thread, and this is entirely inappropriate for the forums. If you don't like Macs that's fine, but if you're going to be critical of the platform it needs to be kept civil and constructive - idle attacks are nothing more than flames.
I was hoping to clean up this thread and re-open it but there are far too many posts/quotes to delete. Drakenborn, if you would like to post a fresh thread on this topic send me a PM and we'll arrange it so your opening post is followed by a strict warning from me that platform bashing will not be tolerated.
I have yet to see where calling out a troll is against the rules. Especially, when I have seen it happen at least three times in the past 5 hours by moderators themselves.
Calling someone a troll is not allowed on the forums, and this is outlined in the forum rules (funny enough, alongside the bit about platform bashing). If people are causing problems you should report the posts and let us take care of the problems, being goaded is not an excuse to flame in kind.
7. Flaming is not allowed.
Insulting individuals or groups of members and name calling are flames. Any remark that is made to insult or demean another member or group of members will be considered a flame and thus you may receive a warning for it.
Calling people a troll or an apologist for instance can both be considered a flame as can calling someone stupid or ADD. Attacking Xbox players, PS3 players or PC players is not allowed and calling them "console kiddies" or in anyway indicating someone is in some way a lesser person because of their choice is considered a flame here.
I suspect moderating these forums would be rather farcical if we couldn't tell people when they're causing problems, and what those problems are. As such moderators are allowed to inform people when they are being trollish.
I can try to answer your question, although I'll note I'm not a Bethesda employee and I can only speculate as a fan. However I suspect they haven't pursued Mac editions of their games because they don't believe the market is large enough to warrant the work required to port the title. Back in the Morrowind days the community often suggested to Mac gamers that they contact one of the companies that specialized in porting software to Macs to let them know the interest in getting Morrowind brought over. For better or worse it seems Boot Camp has done away with such things.
Bethesda was primarily a PC developer for some time. Supporting the XBox was likely fairly easy since it shared much of the same architecture, and it opened up a very large audience. I know one of the Bethesda programmers is a Mac enthusiast and he mentioned once on the forums that he'd pitched a Mac edition of Morrowind but it obviously didn't work out.