Not even close. Mobile phones actually had numerous advantages over landlines. You could travel with them, have apps, long distance was far cheaper, etc. The writing was on the wall for landlines very early on, and everyone saw it coming. It would be like predicting today that streaming won't take over over the air programming for TV. It wasn't that much more expensive than a landline when all was said and done.

SpaceX has very little, if any advantage over decent DSL, especially since mid-range DSL will be $30/month with no equipment to invest in.

I don't think they'll be able to sell in India. ISRO and the government are typically not friendly to other countries providing services like this.