This is a carry over from the Mike Bossy thread.
Mike scored 50 in 9 straight years.
You would need to score at a higher than 0.61gpg pace, and with injuries, possibly closer to 0.70gpg+.
Of players with 200gp or more, these are some current gpg:
Matthews - 0.59
Pastrnak - 0.55
McDavid - 0.52
Draisaitl - 051
This is purely a production question, I don't want this to be a "who has the most talent" or "scoring across eras" conversation. Those have been done to death.
I think you have to start this by looking at "adjusted goals" - if not the answer is no one. By using hockey-reference's method of adjusting goals (which is far from perfect - but at least it's a baseline we can use for this discussion) - Bossy's stretch of 9 seasons of 50 goals becomes "adjusted" to seasons of 40 to 58 goals. Only twice does it amount to 50+ goals (58 and 52) the rest are in the 40 range.
So if you were to ask can anyone in today's league match this - I'd say yes. It'll be very hard to do - but I think someone like Matthews would be the most likely. 9 seasons in a row of 40+ - with a few spike years of 50+. I think the only other player in today's league I could see doing that also is Drai (being McDavid's teammate is a big reason why, if not I wouldn't mention him). I'd be surprised to see Pastrnak show that level of consistency year to year - Laine might spike higher than anyone (60+) - but consistency already seems like a major weakness of his - and no one else seems even worth a look to be honest.
Will any of them actually do it? Probably not. Just look at Matthews - 4 seasons into the league pacing for 40+ each year, but twice he missed it to injuries already - and even this season he would have hit 50+, but seems like he won't with season ending due to circumstances everyone knows. Maybe there's a lockout one year. Maybe another injury. The consistency and good fortunes needed to hit 40+ 9 years in a row is really difficult.
I do think Matthews can hit 40+ goals 9 times or more - just not sure about in a row.
Also just to show how difficult this is - even Ovechkin didn't do it, even ignoring all lockouts and injuries. He simply had an "off year" twice in 2011 and 2012, scoring 32 and 38 goals.
I voted Matthews. If you want to keep this strictly to 50+ though - my answer changes to no one.