What do you mean by bitcoins last big rally? After this halving, will bitcoin be dead or will the industry abandon bitcoin and its utilities? It is true that it is going to be the biggest bull cycle ever and people will make more money than they have before. This time institutional investors are running the rally and they have a full bag of money that they are injecting into the market. The way they are accumulating bitcoin the exchanges will run out of bitcoin very soon which will create a supply shock.