Are you advocating that private companies have to sell and produce items they don't want to? Amazon doesn't want to sell those items and the copyright holder of Dr. Seuss doesn't want to create them. Are you saying the government should force them to sell and produce those products?
I simply think Amazon should not censor books, and people who are against censorship should try pressuring them into not doing that.
As for government intervention, at least for the case of Amazon banning books, it seems practically infeasible to me. Large and vociferous factions of the ruling class do want censorship, and Amazon et al are doing it in part to appease them.
For social media censorship, there might be a better chance of effective regulation, as probably more people care about it than banned books.
