It can do that, it can also do the other things all gsync monitors do by standard but the reality is most don't. That's always the counter to the "there's hundreds of freesync monitors so it must be taking over the world". The reality is there's hundreds of monitors with bad freesync implementations and very few that actually meet what you'd expect to find on every gsync monitor (min 30fps, LFC, overdrive that works while variable syncing active, etc).
If we disclude the "any freesync is better then nothing" argument and concentrate only on people who want it to work well then there are almost the same number of freesync and gysync monitors for sale today as most companies tend to make one monitor and have both variants. They are all still fairly pricey. The gsync variant will cost more but tends to include things like a better dead pixel policy so you often get more then just gsync.
This again. Like you said, there are just as many high-end Freesync as G-sync options. Obviously, you get what you pay for. A $200 24" won't have the same features as a $1000 34" curved ultrawide, that doesn't make them "bad freesync implementations".
How it could ever be considered a negative that Samsung, LG, Acer, etc. use DP1.2a in all their monitors is beyond me. Even a 40-60Hz range is a nice bonus, it's a win for everyone.
But with NV's gaming GPU revenues continuing to grow quickly and with its share/installed base of the gaming GPU market where it is, there's little reason to throw in the towel on GSync.
Once again, they don't have to ditch G-sync, they can easily support
both. They already seem to have people convinced that G-sync is some kind of premium implementation, hell, it actually has a couple of advantages like ULMB. They can continue to market it like that. It's really not that far-fetched they will support A-sync in the future.