That's because the web is cross platform, truly. It's not a separate issue - the prevalence of the web is exactly due to platforms like .NET being limited. If .

That's because the web is cross platform, truly. It's not a separate issue - the prevalence of the web is exactly due to platforms like .NET being limited. If .NET (and others) were cross platform much earlier, I think many applications would be true apps instead of web apps right now.