Starlink recently hit 10k satellites. I'd hazard a guess that's not anywhere near enough getting everyone in the US, let alone worldwide, online.
While having more satellites sure does help serve more people, there’s a second issue which arises when trying to serve high density areas, where you run into bandwidth limitations. The solution there is not more satellites but either bigger satellites (which can make smaller beams) or more FCC allowance on the spectrum.
Not everyone. But it's enough for rural areas, which are the most expensive and least practical to serve with wires.