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.
For me it isn't too late to buy bitcoin because there is no too late when it comes on oppurtunity. We have a different timelines in life and it doesn't mean that when other people goes to it you're already late. But if you catching the lowest price of bitcoin you are too late because bitcoin in 2009 is lower than you can imagine and if you bought atleast 100 of bitcoins that year you surely now a millionaire.