There's no doubt about that, and do you what's the funniest part? There will always be some people with this regret after every five years or so, and this has been happening from the beginning. Those who didn't buy Bitcoin or showed any interest in it around 2010 regretted it badly in 2015, but even in 2015, there were doubtful people who didn't take Bitcoin seriously and didn't start buying but they mocked it, called it names, said it's a bubble and it is going to burst very soon.
By the time we reached 2020, those people were already ashamed of themselves for not taking Bitcoin seriously in 2015 and losing a golden opportunity, but guess what? There were still people in 2020 who didn't take it seriously and thought it is not something they should focus on or make investments in, so they ignored it even after knowing about it, and then comes 2025, and regrets hit that group as well. Now, we are in 2026, but believe me, there are still people with that mindset, and as you said, they are only going to regret it when we reach 2030.
Haha the regret cycle is repeating because human psychology does not change. It remains the same, and those who change their psychology take the necessary steps, but this also proves one thing, that every fifth year a new group of people discover bitcoin because after the halving and bull run, when the early adopters make a lot of profit, they set it as an example for the rest of the world and people see it and become greedy.
They think they have lost the opportunity and then spend the next five years doing nothing and the cycle repeats again, and they realize the pattern is still repeating until it starts to delay to test where these people break.
Although being cautious even after the continuous repetition of the cycle is necessary for anyone to be on the safer side.