In boom years.<quoted text>
... On average Concorde made and operating profit of £30-50 Million a year for British Airways in the boom years
Tell us: did you skip over the part which described how the plane got into the air and how the "profits" came before they paid back the government's cut?
"Why is Concorde being retired?
It is all down to cost: the Airlines are not making back the money spent on the safety modifications and other upgrades. With some other big costs coming up (tens of millions, before any life extension programme), BA need to write off £84M now, rather than £150M in 3 or 4 years. Air France will write off a large sum of money too. "