We're spending hundreds of millions on cutting-edge telescopes while concurrently spending billions to blast view-destroying satellites into orbit. Sad.
A globally interconnected world is about cost equivalent with the 1 James Webb Telescope. The James Webb Telescope budget is ~10 Billion, has grown from $1.6 Billion and still expected to grow. Each Starlink launch of 60 satellites is at most ~90 million. That is a ~62 Million launch cost + $500K per satellite. Real launch costs are probably much lower since SpaceX is it's own customer. Assuming the maximum cost for the full 12,000 satellite installation then you would be correct. $18 Billion vs $10 Billion. However the costs for SpaceX are going down over time which is how they probably arrived at their $10 Billion estimate for total deployment. (I only checked Wikipedia).
I would like to see James Webb working since Hubble has been a true inspiration but I think a truly globally connected world is a much more amazing achievement. My other hope would be with the commercialization of space there are now opportunities to radically reduce the costs and increase the capabilities of orbital astronomy.
Shortest distance between two jokes = A straight line