Many barrier that Bitcoin need to break and that is not easy. But I am sure that will happen and that will be only a matter of time.
In the past when bitcoin was priced below $1k, it was quite possible that most investors were skeptical about the $20k, $40k, or even $120k price range. But after a few years, they had to admit that their doubts about Bitcoin's long-term potential only hurt them. They had the budget to invest significantly, but they simply missed the opportunity to buy Bitcoin at such a low price.
Higher prices in the future are just a matter of time. I agree with your statement, but it's something realistic. I don't believe $1 million is realistic if $500k hasn't been reached yet, but if $500k to $700k is reached in the next few years, then $1 million is a possibility.