As full of holes as Microsoft OS is, not long. Perhaps that's what the "O" in Billy's OS was really meant to represent. =:-0
Or, perhaps "Operating" System really is accurate, because they're always having to "Operate" on it!!! Yuk, yuk, yuk.
Oh, I'm just so full of myself this morning,

but, puulleeeaassee, why doesn't he just offer the OS for free and charge for fixes, patches and updates to enlarge his already bloated bank account.
But wait, that would mean Redmond would have to produce a quality OS first time 'round or no one would want the schlock anywhere near their computer for fear of spending hundreds of dollars a year, month, week, (day, even?) purchasing the endless patches, updates, patches to patches and updates, etc., etc. that we contend with now.
Billy wouldn't be able to get a computer manufacturer or sales outlet to put his buggy hole-ridden software on their machines to save his life. Why would anyone buy a box with inferior software that's going to cost them mega-bucks for as long as they use it, over another less buggy OS, Suite, & what-have-you.
Just think of the $$$ saved in workforce productivity alone! Then we have to repeat the same scenario at home, churches, schools & meeting houses. Wouldn't it be great if we could bill Bill for those hours spent patching? Not to mention all those additional hours recovering from damages incurred by the patches themselves!
The benefits wouldn't be exclusively for the consumer either. Think of all the $$$ Gates would save by not having to deal with licensing at all. No tracking, no cracking, no fancy anti-piracy technology, no expensive holographic logos. Redmond could put all those dollars into producing a carefully developed, fully tested product instead.
No, really. Think on this. Personal computers, once considered a luxury, have long outgrown the category of merely elective electronics for the affluent set. My children's homework, my work and both mine and their lives revolve around computers. Indeed, in many households, it has become the only electronic source of communication with, and information about, the outside world. Much like land-line telephones in their heyday, they've reached the status of a utility. But I dare say there would have been a lot fewer of them in use if they didn't work right half the time or constantly had to be tweaked to get to work right or worse still, be SAFE to use!
So, if all OS's are free sans the fixes & updates, then the market would truly determine who the top dog in the computing world would be instead of some monopolist offering kick-backs to computer manufacturers & resellers to smother the globe with inherently poor software workmanship.