I'd be OK with it losing share to others. Currently the situation sucks: you have very few alternatives when shopping online. That is not a normal situation in any kind of a "competitive" economy. I'd go further, and break up Amazon's retail into two companies as well. 2 Amazons, 2 AWS-es, fighting each other to the death would be the ideal outcome.
Notably, there's a cartel-like coordinated pricing situation between the big three cloud providers, which manifests in the lack of price competition, and which we need to bust somehow.
Usually the victims of coordinated pricing are unsophisticated consumers. In contrast, the customers of the big 3 cloud providers are organizations employing specialists in cloud computing. So I am surprised to hear this.