This is really annoying for me 😇 . I am not one who would believe words of the Elon and I would say that intuitively it didn't make financial sense but I've looked into it and to my surprise the numbers are actually getting kinda close:

they claim they have 4 million customers - at 100 USD per customer / month x 12 - 4.8 billion USD. There will be some tax, but they have also deals with US military (StarShield) or GSM Operator and wide range of "enterprise services" , so I suspect the income could be at around those 5 billion USD from starlink alone.
they did 90 launches last year maintaining and expanding the network. It's hard to say how much a falcon 9 launch cost - but CNBC says it was sold for 67 million USD in 2022. Not sure how much margin Elon gets on a single launch, but 5 billion / 90 is over 55 million USD - which is right there in the area..

Now this is ignoring the cost of the satellites, the maintenance of 150 ground stations, development of the HW /SW, advertising and god knows what else - but still at least in the "ballpark numbers".

To my unpleasant surprise - the Elon might not be joking on this one 🧐 - the Starlink might be one day paying for the development of the Starship - if it isn't already 😲 Also - this is bloody cool 🤬