Is there a reason why we have fewer of those problems with Mac OS X? I can see that the Windows audience often isn't tech-savvy enough to understand that Ask isn't part of Windows, and that's probably also because Chrome/Firefox/Safari are more diligent about managing extensions than IE. But there's a very serious constant problem of spyware/adware in Windows that I don't feel exists in Mac OS X and Linux.
Because the markets are too small. Windows is what, 90%+ market share? Why spend n2 or n3 times the effort (as a malware writer) when the absolute highest upshot is a single-digit percentage ?
Well you named it. Marketshare is still over 90% on the desktop and most non-tech-savvy users are likely to use Windows as well.
I can't think of any other reason.
