It's not nothing, it just wasn't enough by itself to overcome the competition.
In the web's short history we've already seen several browsers rise and fall. It's possible Microsoft may in the future repeat what Google achieved with Chrome if it can find a new edge to compete, pun intended.
Which clearly didn't mean anything [1] for increasing market share.
[1] https://ferdychristant.com/the-state-of-web-browsers-f5a83a4...