Fred,
I doubt that the Mac will become the industry standard, since the higher end Autodesk stuff (Flame, Inferno) runs on Linux on high end PC's and the users of this stuff don't tend to swap platforms unless they REALLY need to. The HP Z800 seems to be the machine of choice for these apps and is the PC platform Avid recommends.
But if you need Smoke then you may have to go the Mac route. Be aware that Autodesk have a habit of just dropping products, as they did with Combustion, and Toxik is now merged with Maya.
Yeah, I'm quite angry that they dropped Combustion. It was (and still is to some extend) a fantastic product. I'm still using it but since Red it's not usable.
The reason I'm so interested in Smoke, is its versatility-price. I don't have the possibility to run the big artillery like Flame, budget question. I almost think that Smoke is a sort of contemporary Combustion in many ways. Their move to Mac only with that product is because I think they studdied their target - middle end prods - was vastly on Mac and Smoke is in fact a software capable of doing everything in most of the cases. Also, there is a Flame suite for Smoke advanced where they took care a lot about the interface-workflow so an invertion today on Smoke can be increased if needed without having to restart from zero.
The software is so good that it's been used on productions bigger than it's target.
But also look at Scratch. They are also on Mac now and it was a pure pc stuff, but they where so clever to keep their PC clients. I'm not saying that the very high-end industry is going to swich Mac, no, but there is now a vast market with a lot of photographers that yes are on Mac and middle-end prods who also run Macs and this is where their targets are IMO. They know that there is a lot of money there because 80% of the productions will be done in this segment.
The thing is I don't see today in the PC world a software equivalent to Smoke that covers so many aspects of the PP. Or it is directly the big expensive artillery Flame suite or the layer based (wich I don't want because too slow and rather complicated) AE.
Nuke is an option, vastly used in Europe, but it is not IMO as versatile as Smoke and more focussed in the chain.(some would disagree on that, though)
But I agree that Autodesk should stabilized their products.