Among other things. I’d say that the moon approaching economic viability is a big factor. There’s (actual) gold on the moon that would be profitable to mine and return to earth right now, with currently flying craft. Helium 3 is another ultra rare, ultra expensive resource that the moon has a lot of.

When starship flies, and economics of scale kick in, you see a snowball effect where the cheaper space flight becomes, the more lucrative it also becomes and therefore cheaper still. People want to jump on that next, final frontier.