Comment by nicce

It is not about what is supported now, but what will be supported in the future? Google is pushing most of the web standards and has a huge influence. Other, less used browsers must support them if they want to have any chance.

You should ask that how many of the standard features are brought by someone else without huge influence of Google. If you cannot get anything new, when it is enough that Google says "no", then in reality there is only one browser.