Okay, lets assume for a second that the advanced extraterrestrials are among us. Giving a shot in a million lets also assume that some of them are reading this.
Here is a thing:
buying conventional mining equipment is loose-wise in terms of bitcoins. Spending X bitcoins to invest in the rig and getting out 0.6*X after reaching prfitability limit. I guess only usable quantum computing can do better than that.
So if you happen to have access to one - PM me