That's some pretty big news if Michelin pulls out. It's all roundabouts and circles though isn't it? One manufacturer gets dominant, another comes in, the original manf pulls out. Remember it used to happen in F1 quite a bit. There's been a number of tyre changes over the years. Depends on who really wants it, and what they want it for.
It's definately paying off for Bridgestone, the last few years have let them to release some definately improved tyres (think BT002 [in both forms] and the new BT016 which is a far superior tyre than the BT015 it replaces).
It's got me stuffed why Michelin couldn't produce a tyre to do the job on the weekend. I know tyres are very technical and there's a lot that goes into them, but seriously ... those guys were leaning the bike over about as much as your average track day rider .... no confidende at all in the front end.
"Only two things are infinite, the universe and human stupidity, and I'm not sure about the former." Albert Einstein
'85 GSX250S -> '96 ZX6R -> '98 ZX6R -> '00 ZX6R -> '03 CBR954RR -> '04 ZX10R -> '02 ZZR250 -> '06 ZX10R -> '08 KTM 990 ADV