Because the elites have decided that privacy is only applicable to businesses.

Because it generally has much stricter firewalls, more granular policies, better/more comprehensive logging, no device phone home, and no requirements to sign up for online accounts. All of which make it all much more secure by default due to standard enterprise company requirements, and easier to customise to the users specific secure needs.

Enterprises often have to pass audits and have regulatory compliance requirements. So no surveillance capitalism for them. Where enterprise tech vendors get you is licensing cost.

They pay enough to not become the product

Because enterprises pay a lot of money for strict privacy, whereas consumers pay less if anything.

In addition to the other comments, enterprise infra (almost) never has internet access.