Edited...
I was a bit confused by your numbers GbitG. If a person invested $100 per week since March 2014 until present, he would have had invested right around $58k, and then he would have accumulated about 44.63 BTC. 44.63 BTC would have a 200-WMA value of $2 million and a spot price value of $3.75 million. So surely a guy investing $100 per week for the past 11 years would have had ended up doing quite well in his bitcoin investment.
I was in a hurry. So that's why I spotted the wrong calculation. I really appreciate your efforts to figure out my mistake....
I saw a lot comments abou why buy BTC is not late,but no one gave it a second thought that for 100k tooooo expensive!!! 
Nope, Buying 100k (long-term) is not too late...You can buy satoshis by doing Dollar Cost Averag on a weekly or monthly basis. If you think it's too expensive. To be honest, for us (DCA), it is not too late to buy. Because we believe that price correction is not the actual thing. In fact, the actual thing is quantity, not price. In long term, Bitcoin is always on an ascending track, and even if someone is accumulating Bitcoin at 100k, then for sure in the next 5-10 years, he can get back sustained profits...
So believe in Bitcoin. It has huge potential to give you a drubbin return whether you have a fraction of this ether or you have a whole of this. It always will give you more margin in the return than the invested amount, only in long term perspective.
So don't be distracted by price. Just grab BTC