They kind of were. The development programme was funded by not one but two national governments, seen as Europe's answer to Apollo. The programme didn't even make an operating profit, much less start to pay back development costs. BA claimed to make a small operating profit on it, but only by sharing maintenance costs with AF's loss-making operation; once AF pulled out it wasn't viable even with the prestige it brought them.

I love Concorde but it wasn't really a commercial operation the way you'd usually use the term.