Retail is not really a winner take all market though. It has very low barriers to entry. There are multitude of options to use as an alternative to Amazon.
https://www.emarketer.com/content/amazon-dominates-us-ecomme...
To Amazon's credit, they did move fast and bet big on online retail first. But since it is a low barrier to entry business, there is next to profit to be had in it, so they really do not have an incentive to keep pouring into it. Why bother playing for 2% profit margins versus Walmart and Target and Home Depot and Costco when you can earn 15%+ as a platform.
If people stop using you, then oh well, switch to web services or media which have double digit profit margins, but it is not really a big loss. So I would say the uncaring attitude is due to lack of profits margins, compared to their alternative.
