This is, of course, the reason why some worry about any browser having a huge market share over all the others. It becomes simply too easy to decide to just support that one to the detriment of proper open standards simply because 85+% of the usage one sees is "that one browser".

And the same goes for any of them, Chrome, IE, Firefox, Safari, Opera, etc. No single one should have such a huge share above the others, or else exactly this starts to appear all over again.