With the previous 3 halvings, the market has gone up and bitcoin has increased thousands of percent after each halving, and I still hope history can repeat itself again. But to be fair, we have no guarantees that the cycle will repeat itself again, and the halving will still be a factor in bitcoin price increases. For now, we're still waiting for that to happen, but there's no guarantee so I don't think we should claim that just holding bitcoin after the halving will make everyone profitable.
I hope 4 year cycle repeats but I don't rule out the scenario that it probably won't happen because we saw bitcoin hit an ATH before the halving and that has never happened before. Things are gradually changing, so don't be too subjective.
But I agree with you that holding for long can help us profit because bitcoin demand is increasing over time even without halving.
There was never a guarantee that the cycle will happen, not now and not ever but it did happen before and I believe that we are going to probably see it again. Not everyone will invest based on that, there are times when it is not that clear and we could have some issues with time, but that doesn't mean that we are going to end up with the same result each time. We need to remember that it is going to be a hard period because it's clear that we are not going to make a profit based on a new cycle, that is very hard to happen.
What we are going to do is a situation where it will definitely go up just like the old days and we are going to make a profit like that. If you keep on waiting for something new to happen, then you might be wrong and that may not result with what you want to achieve. However, if you do end up investing into it like you want to invest into it, then the results will be a lot better and you could do something much greater, because it has happened like that before and could happen again.