The length of the hop is almost always far shorter with fiber though. With satellite, you have to go to space to receive Akamai-delivered content, game with other people in your neighborhood, or hit your ISP’s DNS cache. Don’t get so caught up in the physics that you forget to consider the implementation.
The Starlink satellites weight about 200+ kg and have big solar arrays to power their electric thrusters. I'm sure they could squeeze in some space rated (or massively redundant) SSDs to provide some CDN capacity in some of the later revisions.
