In my perspective, It is not too late to invest in Bitcoin.
A very low percentage of people own Bitcoin. 
Take a look around you. How many people actually have Bitcoin? 
Its a low percentage, perhaps around 4%.
Bitcoin is only owned by less than 5 million people worldwide and still has tremendous growth potential.
Everybody thought they were too late at $100, $500, $1000, $5000, and now almost $10,000.
Nobody knows the answer for sure but its worth researching and getting into with a small amount of money that you can afford to lose.
There's a saying in Crypto world. 
Keep calm and buy bitcoin 

Not too late, bitcoin prices are currently in the range of US $ 9,000, reduced by half more than the highest level of US $ 19,000 at the end of last year. However, this does not mean the digital currency or cryptocurrency will disappear. In fact, crypto is predicted to replace the dollar by 2030.