I love that SpaceX does that, because it proves once and for all that the sales tactic of "we need to know the details of your use case" is a lie. Some B2B software application is less complicated than launching things into space, so if SpaceX can provide pricing anyone can. They simply choose not to because they're hoping to waste your time and get you to succumb to the sunk cost fallacy.

It's worth noting that prior to SpaceX every single rocket was hand crafted, and often varied in key details based on the payload. Certain when it came to (people-intensive) integration tests and launch prep work. There's partly a legitimate reason ULA needed customer details before providing a quote.

But mostly it was so they could charge NRO more for their birds, by not having a price on their website.