Along that line: I know that Lowe's, Home Depot, Chewy etc ship to me with speed matching or beating Amazon's (at least above a minimum purchase), so if what I'm buying is sold by those companies, Amazon does not get that sale.

Amazon is hugely anti-competitive, but their moat can be surprisingly shallow in some areas.

What Amazon has shown the rest of the industry is that shipping matters. Others are learning, at their own pace.