if you dont make 10 requests per second and maybe even fetch the data from another instance like this https://iusearchlinux.fyi/c/memes@lemmy.ml i dont think it matters too much on the bandwidth side. I dont really know about the other more technical sides :/
From what i know tesla was first really profitable from cars (not investors) in 2020 and elon gave himself a bonus with like 50x value from all the profits (my source is the youtuber thunderf00t).
And if i heard it correctly tesla cars are overpriced compared to the competitors and none is on place one when it comes to the stats.
But to simply buy a tesla is as easy as simply buying the most advertised bs like nestle products.
And to the spaceX thing: they get their money mostly from having launch platforms and overpricing it there, the malket there only could be dominated because of investor money. (no source)
The satelite internet drains more money (with US GOV tax funds, no source) than it generates value outside of specific use cases. (partially thunderf00t)
Another thing (i dont know if it is true) that tesla and spacex are doing better since elon is occupied with twitter