Unlikely..
- 1% of traffic is still significant for most businesses.
- Consistency/Training/Hiring. Everyone that has ever written JavaScript has learnt jQuery. Some people don't even "know" JavaScript, they "know" jQuery (I say this as a testament to jQuery, not as a detriment to these developers. jQuery is all they have needed, why know anything else?)
- jQuery has so many plugins/frameworks that depend on it. Bootstrap alone gives it a ton of utility. Backbone/Ember are extremely tied to jQuery (or "clones").
- While ofcourse plugins/frameworks can be rewritten to exclude the jQuery dependency. jQuery is provenly stable. You would need significant counter inertia to rock the boat. At that point, why rock the boat? No one ever got fired for using jQuery: huge utility.
- Ergonomics. AJAX, Animations, Custom Events would all need custom wrappers / util libraries
- Forward compatibility. If you use jQuery today, all you'll have to do is upgrade the version of jQuery and you're using the latest and greatest browser internals (when appropriate) but no change to your API (mostly)
And I'm sure I'm missing a couple.
P.S. Before anyone starts, there are tons of good reasons to not use jQuery. Are the reasons to drop jQuery greater than the reasons to keep it? I don't really care. That is for individuals/teams to decide. I am just answering the parent's implicit question: "Is there utility to jQuery beyond legacy browser support?"