The only thing they think of is sweeping The Evil off the market, or at least steal them quite dozens of percents of the monopoly. It's as simple as that. Software should not be ruled by companies. It should be free, not only Open Source. That would be too much work.
Some people insert small images of national flags indicating the language of a page.
I don't do this because I'd have flags all over the place then. Instead, I just mix both languages. With this rule it shouldn't be a problem. Das w re einfach zu viel Arbeit. Sonst h tte ich die ja berall.