Bitcoin is not too late to buy now, because many people have not even heard of it, which means that it will continue to develop actively for many years.
I agree to you that its not too late to buy bitcoin now because many people have not even heard of it yet, it isn't too late even if the price of bitcoin now is expensive because even if the price is high you still can be a millionaire and can buy things what you need and things what you want in your everyday life by buying and earning bitcoins. And also the bitcoin society still develops actively everyday, months, years, also the fluctuation of bitcoin is active too.