But one person will flip a coin

Yeah, but that's the thing right...
If you already have enough wealth, then sure, you might as well get the gamble and maybe get 5 BTC.
But if you don't have enough wealth, the certainty of getting 1 BTC will probably be the best bet to make.
Whether I have enough wealth or not, the guaranteed income is what I will opt for and I believe this is wisdom in all ramifications. I've lived in a risky environment to know the best thing to do in a situation like this having been faced with multiple of them, the outcomes in the long run are always the same. Just get the money out of risk then take a deep breath and plan what you want to use the money for to earn you more. For me, I do not see that huge difference between the 1 BTC and 5 BTC, other than the 4 BTC which can become 0 BTC with a higher probability if you risk further on it. But if that 1 BTC could be well-utilised, it can get you the best in life and might even end the poverty in your life if you are poor. The amount that some people put together to make their life fortune was not even up to the present value of 1 BTC, so we do not have any excuse here.
Also, think about it, if you are smart with cryptocurrency investment and even invested the 1 BTC in one sure coin/token, at least another 5 BTC can be made through that. But by that mean, you are not taking the aggressive risk as though you are wagering the money again, which would be senseless to me. You may even open a business or do another thing with the money like buying land and other promising properties. Before you know it, you will make the multiple of it. The difference would be that it was a reasonable means that you make the money work for you, and not through further gambling that can take it all away from you and get you depressed. We should learn how to weigh our risks and manage our options and even ourselves in this situation.