The OP worded it badly shouldve said "so rides go to those who value them the highest"
(Un)fortunately you choose to live in a capitalist society. While it is a good system, it has its flaws, and the biggest one is that resources go to those who will pay the most for them. This is just an example of those wonderful words "market forces". Amazingly this is one of the times where everything is working as it should. Unfortunately that is a bad result from a moral viewpoint.
But devils advocate:
If they kept normal pricing and that only attracted 1000 drivers, but 2000 people need rides how do you propose to choose who get them? First in will not give any more of an equitable outcome, some of those who need it most will still miss out.
If surge pricing meant they attracted 1200 drivers to the area, is that not a better solution as only 800 people are left "stranded"