That’s true to some extent, but there are also several things that the WebKit team has not implemented due to concerns centered around privacy or loss of user c

That’s true to some extent, but there are also several things that the WebKit team has not implemented due to concerns centered around privacy or loss of user control, which are often shared by Mozilla. Apple should probably do more to keep up with web standards but they absolutely should not accept everything that Google tries to push through with Chrome. At this point, with Firefox marketshare sitting in the low single digit percentages, Apple with WebKit is the only meaningful opposition to Google and it would be incredibly damaging to lose that.