The thing that happens in practice is the site is expected to be rebuilt on short timelines and at the end you find that it isn't trivial to make it work on other browsers. And the engineers don't even have machines that can reach their development servers that can also run IE, and the version of Edge that can run automated tests is so old that it doesn't support flexbox.
So now some VP has to make a decision whether to launch the thing to 85% of the users that also are on the companies own browser and support other browsers in the future, or delay everything on that. It tends to go the way that locally makes sense.
So now some VP has to make a decision whether to launch the thing to 85% of the users that also are on the companies own browser and support other browsers in the future, or delay everything on that. It tends to go the way that locally makes sense.