Do you really think these companies are spending billions of dollars on such systems without doing any research as to whether a market for it exists?

"Starlink is SpaceX's primary revenue driver, generating $11.39 billion in 2025 and accounting for roughly 61% of the company's total sales. The satellite connectivity unit is the only highly profitable division of the company, generating an operating income of $4.42 billion"

Right, but it's the only company doing this. My question is whether there is enough market for more companies. The amount of people with wired internet access is not going to decrease.

Unless this drives a huge population migration to even more rural areas