If SpaceX's fourth Falcon launch had failed and SpaceX had gone bankrupt then space agencies would be paying a lot more to get supplies and astronauts to the space station as well as paying a lot more for low earth orbit and geostationary satellite lauches. We would have to rely on launch vehicles like Atlas, Delta-iV, Soyuz or Ariane-5 with Soyuz doing all the human rated launches. ULA is not far behind with Atlas and Boeing's Starliner, so if it were not for SpaceX we would be using Soyuz and maybe Starliner for human rated flight.
The way things are looking space will be the internet and I think Elon Musk recently forecast that Starlink would make $30Billion a year, more than enough to fund Starship. OneWeb have just filed with the FCC to put 48,000 satellites into low earth orbit despite filing for bankrupcy, so space and the internet are not going to go away any time soon.
Everybody said that SpaceX couldn't build and fly reusable harware but they've done it and that has brought down launch costs by a hell of a lot.