[cnj]

> Once the decision has been made to move their products off of Amazon [...]

There is another valid decision: Diversify your channels and sell on multiple platforms. This way, you're not completely dependent on Amazon anymore, but still present on the biggest eCommerce marketplace.

Sell on your own shop (and, if you do marketing, direct it there) but also on Amazon, eBay and probably other marketplaces that work well for your niche.

This can be done with Shopify and probably most of the other solutions listed in the post as well.

Disclaimer: I work for commercetools, an API-first eCommerce platform.