Rural areas are a viable market only in the US and Canada, where people can afford to pay $50+/month for connectivity. Elsewhere in the world, they are not going to sell to any end-users.
The 4,425 and the 7,500 satellite constellations proposed by SpaceX are way oversized and simply put, a waste of money and efforts.
And they could stop launching them if they don't see a supply, basically just matching their registration numbers and launching more when the bandwidth/users require it.
Those numbers seem to just be a target for an ideal completed system, not for it to become operational.
Now I just need some Tesla solar panels and a couple powerwalls, and betweeen that, a well, my septic system, I can cut every cable coming into my house.
Well, I do use natural gas for heating and I love my gas stove, but nearly there!
If only the receiver and the power requirements were small enough to fit in my cell phone!