It is worth considering that maybe Sinovac (and whatever the Russian one(s) is/are called) may have been released far earlier than they would have been if the U

It is worth considering that maybe Sinovac (and whatever the Russian one(s) is/are called) may have been released far earlier than they would have been if the U.S. and others had not developed their own faster. Think of space wars - even if you lose the race to first, you still want to be in 2nd vs 500th. If they were developed at a more traditional pace, would they be more effective? Would any of them be? And what would be the consequences of waiting? Would it be millions more deaths, or would natural herd immunity emerge? Both? Would the more virulent variants have appeared without a marginally effective strain evolving as a result of marginally effective vaccines?