In 2020, satellite television services revenue amounted to 88.4 billion U.S.
www.statista.com
View attachment 804569
Today, globally, satellite TVs give a revenue of around 90 billion dollars annually.
There's nothing that prevents Starlink hitting those numbers in the future.
The price of Starlink is already comparable to satellite TV providers and will probably get even lower (The Starlink satellite dishes at least would).
The difference is, there is more demand for satellite internet than satellite TV. In the US alone, the average American pays $1.13/Mbps per month for internet, while Starlink users would pay $0.96/Mbps per month, making it an attractive alternative. And that's a developed first world nation, in third world countries, internet is much worse.
Of course it doesn't apply to everyone, my house for example has fiber optic internet and I get 2.5Gbps so getting Starlink would be a downgrade.
But for people without access to such infrastructure, this is revolutionary. This even applies to rural China, although I don't think Starlink will ever be legal there.