Let me fix your title:
SpaceX wants investors to think that they will be able to launch millions of satellites.
Yeah I remember reading that what killed the space industry in the 90s-2000s other than the collapse of the USSR and cessation of great power competition was the massive move to digital communications, particularly satellite TV - which mean that a smaller number of satellites could serve the expected demand.
SpaceX has consistently launched ~90% of the mass to orbit for the whole planet Earth over the last several years[1][2]. There's no one else who could more credibly make such a claim.
1: https://officechai.com/stories/spacex-launched-85-of-all-glo... 2: https://www.nextbigfuture.com/2024/05/spacex-launching-87-90...