Corel is going to have a very hard time. Serves them right. They may have good inroads in the PC market but they would have to make some serious concessions and redesigns, not to mention unparralled customer support in order for me to switch. I wonder about the future of the MetaTools line. I used to use the KPT suite and haven't seen an upgrade for it in a long time.
Painter has some great technology.
But I will be buying a Carbon version of KPT to go along with my Carbon Photoshop. We need as much software as we can get, specifically Carbon and Cocoa apps. Be thankful, not spiteful. If Corel loves my Mac, the love is unrequited.