If you were willing volunteer to test an unproven vaccine then you ought to be able to benefit from that degree of willingness to help society. Meaning, once you are informed that you were given a placebo the only reason to keep following YOU is to see if you get the virus and it's results. Testing to see what percentage of people that do or don't get the virus can be just as accurate following those that resisted, on their own, not to want the vaccine. You with a placebo and those without anything are exactly the same physical risk.
Take a group of 10 people. Five that were issued the placebo (no vaccine) and five that simply refused the vaccine and you have 10 people with exactly the same risk. Why should you, someone that was selfless enough to gamble for the sake of others not be able to get the good results, when the bad results are available to anyone the refuses not only to test but to get the vaccine at all. They pretty much get what they are asking for if they get the virus, whereas I suspect that you are willing to get the vaccine to protect yourself and others otherwise you wouldn't have signed on for the testing. You are completely unprotected just like they are, in fact, exactly like they are and they are doing it by choice. 10 of those people will or at least should give approximately the same results. They have the same degree of risk as you and vice versa.