> Amazon Prime doesn't guarantee that any item you want will come in two days.

So you're saying their deal is "pay us $120/year but we make no commitment to provide anything in exchange?"

It’s sadly not uncommon for businesses to promise various services and then unilaterally change their minds. While I’m sure that there are some exceptions, most TOS have a ton of “we reserve the right to change our minds whenever for whatever reason, without warning”

Now that’s kind of different from the PR fallout. Amazon is risking a mass walkout of their customers over this; it just depends on whether or not customers see this as a reasonable response to a crazy circumstance, or a greedy move on Amazon’s part to maintain profitability over their commitments to customers.

> It’s sadly not uncommon for businesses to promise various services and then unilaterally change their minds. While I’m sure that there are some exceptions, most TOS have a ton of “we reserve the right to change our minds whenever for whatever reason, without warning”

I was under the impression that one party cannot unilaterally modify the terms of a contract without offering consideration to the other party, and the consideration can't be "we will continue to perform according to the terms of the contract".

Thats what they are doing, and I, the customer, am no longer getting the value I signed up for.

For a "customer obsession strategy," this one should hurt their bottom line, either with cancellation of prime subscriptions or lost sales. I am not saying amazon should be penalized or taken to court. This is just the biggest vulnerability I have seen out of the Amazon machine, and I think its very interesting.