Especially now that Amazon owns Whole Foods, the vast majority of my disposable income is theirs. It would be very difficult for them to make Prime no longer worthwhile for me.
Realistically speaking, probably not, no.
Amazon's Antitrust Paradox: https://www.yalelawjournal.org/note/amazons-antitrust-parado...
I have a realized this too, but my response has been to explicitly try to shop elsewhere, to spread my dollars around. I've found Amazon often isn't even really that competitive anymore, they're just coasting on people's habits. I also don't want them to end up an unassailable retail monopoly or near-monopoly.