Never too late you probably wont make as much money as people who invested in it years ago but you can very well still make some money.
That's right, it is proving to be never to late to buying bitcoin , but a time like today when a new ATH is made and above the $5000 level, we can expect that a lot of profit taking is going to follow and then price would likely drop. So buying at moments like this,may not be good invest decision.