The launch of the Mac reinvigorated apple's sales. However, by the 1990s, IBM PCs and clones were saturating the personal computers market. Furthermore, Microsoft launched Windows 3.0, a greatly improved version of the winter operating system, for use on IBM PCs and close. although in 1991 Apple had contemplated licensing its Mac operating system to other computer manufacturers, which would enable it to run on Intel-based machines, the idea was nixed by then chief operating officer Michael Spindlier in a move that would ultimately give windows the nod to dominate the market.