I am totally behind this -- except for Step 3 -- we spend probably 90% of our General Merchandise/household budget at Amazon.com. I know Amazon is evil, but they are just too convenient, esp. since we live in the country. We have placed more orders on Amazon than any previous year -- we're up to 216 orders for 2020, and Christmas shopping season hasn't even started. Also, Wal-mart and Target aren't even 1% better. Even if we had a thriving strip of small businesses to replace all these Amazon orders (hint: we don't), it would cost more money and take way more time, which large families can't afford.
You can't live anachronistically, like it's a different age. I'll give you an example: You can't go without a cell phone. Sure, in the 80's no one had cell phones, but you could live without a cell phone then because NO ONE had cell phones. There were things called "payphones" which have been removed now. Paper maps were sold at convenience stores (probably not any longer, since everyone has smartphones/GPS).
Another example: in 1910, basic penicillin would kill most infections. Not so in 2020.
You could live without Amazon in 1970, because hundreds of thousands of small businesses hadn't been killed yet. But in 2020, you have to take the good (Amazon prices and convenience) with the bad (graveyard of small businesses).
Living without Amazon in 2020 is basically a "Worst of Both Worlds" scenario -- you get the lack of small businesses AND the lack of the competitor which killed them off.