Science has progressed a lot in the last 57 years. And probably SpaceX can do what it does now also because of some of those progresses (computational, communication, materials, etc.). 50 years ago you would not have a need for a Starlink constellation, so nobody built enough capacity to make one.
Science progressed, but it didn't bring the kinds of physical innovations we expected. At least, not until recently. Where are the flying cars? Why haven't we cured ageing? Why don't we have a base on the Moon? Why isn't energy effectively unlimited and free? We had an explosion in information sciences. The internet is a marvel. iPhones and chip technology are incredible. AI is unbelievable to witness. But why did we slow down so much on physical scientific innovation?