I switched from Netscape to Explorer because the latter crashed about half as often. It was as simple as that.<p>And back in the early 80&#x27;s, MS-DOS sold for $40. Digital Research&#x27;s CPM&#x2F;86 sold for $186. They were on the shelf at Egghead next to each other. There&#x27;s no surprise that people bought MS-DOS. Wouldn&#x27;t you? I did. Kildall thought people would pay a large premium for CPM&#x2F;86. He made a huge mistake (especially since nobody at the time could explain to me why CPM&#x2F;86 was better, and after later trying it out, I couldn&#x27;t see anything better about it, either).<p>As for incompatible file formats, just about every last software company tried that. Read about the legendary battles over the zip file format. WordStar didn&#x27;t use a standard file format. Neither did Wordperfect. Every printer had a different, proprietary command language. Every graphics card had a different interface. I once was paid to spend a lovely 3 weeks in Japan getting some graphics software to work with the various Japanese graphics cards. I could go on for hours :-)