I tend to disagree with you here. It's never too late to invest in Bitcoin. A lot of people said this same sentence 2 to 4 years ago that it was too late to enter into Bitcoin and by then Bitcoin price was around 10k to 12k. Now look at the price of Bitcoin currently, it's going even higher and higher with time. The perfect time to start buying Bitcoin and stop sitting around procrastinating using it too late to justify your ignorance is now. Now is better, tomorrow is better and next year is even better. The answer is to start buying as much as you can afford and expect good news in the next few years.
No amount is too big and no amount is too small to start your investment. A beginner would say he had just 10$ to start, yes start with it. Even a little marble but gathered a lot in one basket would fill it up. Which means starting with 10$ with consistently withing a year one can hold a substantial amount of Bitcoin in his portfolio.
If you know about Bitcoin 10 or 5 years ago and you refuse to invest thinking it won't grow is late but one can still start and make something huge out of Bitcoin.
Before Bitcoin got to this price there were people investing on it, there were people who started investing on Bitcoin when Bitcoin was just $100 and there were people who started when it was also $1k and now is $59k so is late but I said one can still invest and make huge profit because Bitcoin still have a long way to go when it comes to it's growth level and so if one invest now with consistency and patience in holding in the next 10 to 20 years one will be surprised because Bitcoin will grow so big.
Despite how coherent your argument may be, you are not correct because saying that it is late to invest in Bitcoin now is like saying you have set a target to which you believe Bitcoin will never reach or pass. Bitcoin is something like every other investment that you can never say is late to invest because it is not going anywhere soon and those who invest rightly will always see their money grow and yield returns on investment. Everyone cannot invest in bitcoin at the same time, so it is just when you see the need to invest, you join. If we have this mindset of it being late to invest in bitcoin now, what will our children do? Or is it right to say that those who will be born today cannot invest in bitcoin again? People will always invest in bitcoin when they meet it and as long as they make progress investing in bitcoin in terms of their finances increasing more than it was when they made the investment.
Give bitcoin ten years from today, the price would have gone higher, and people will still wish they had invested ten years ago would be now. This sequence will not end soon. When I saw the documents of the land where our house was built, I notice the mount there is which is a small fraction of what I use for a cup of coffee. I can only imagine how many of such landed property I will be able to acquire if it were today. I will not say it is late now because some years later, my children and grandchildren will also see that I got some of mu investments cheaper.