It would be good for competition in the long run to have four independent vehicles. However, four vehicles might be too many and prevent any one company making a reasonable profit from its investment. It is a pity that the Boeing bid won the commercial crew contract, I think Dream Chaser would have been a better fit for crew than cargo. The Boeing space division is too wedded to cost plus development, it is hard to imagine them competing successfully in New Space. Only their substantial lobbying effort and long term (very expensive) record of delivering could have resulted in their winning the commercial crew contract.