Contrast Tesla superchargers in CA with, e.g. getting gas at a Costco. They experience similar degrees of queuing. There is a limit to how much of peak capacity you can build for. The solution is not to increase the capacity of a single station, but to build more of them (just as with gas stations). Which is obviously what Tesla is doing.

Building a gas station for peak capacity would mean building so many pumps that you never have to queue. Even when people leave their car by the pump while going to the bathroom or grab a slushie and some snacks.