IE and Safari are vastly different situations. IE started off with near-total dominance and was truly left to rot, with the teams responsible for it having been scattered across the company because Microsoft was no longer concerned with cornering the market on web browsers. Safari on the other hand has only ever seen ~20% marketshare, has never been truly abandoned, and at least covers core competencies well (recall that IE couldn’t even handle transparent PNGs without DirectX filter hackery). IE made even basic static pages a pain to develop compared to Firefox, whereas most of Safari’s significant shortcomings have to do with more advanced functionalities.
If Google got complacent and decided to reallocate nearly the entire Chrome and Blink teams to other projects leaving only tiny skeleton crews on them, allowing both Firefox/Gecko and Safari/WebKit to leave it in the dust in terms of features that would be almost a 1:1 analogue for the situation with Microsoft and IE back in the day.
If Google got complacent and decided to reallocate nearly the entire Chrome and Blink teams to other projects leaving only tiny skeleton crews on them, allowing both Firefox/Gecko and Safari/WebKit to leave it in the dust in terms of features that would be almost a 1:1 analogue for the situation with Microsoft and IE back in the day.