Yes I agree with you that there is a semantic problem (e.g. in the US the adjective "liberal" means "leftie" whereas everywhere else means "in favour of free markets") but that's much less important than the substance so I don't want to focus on words and definitions.
It seems to me that as of 2017 the major threat to free markets comes from protectionism, not from socialism.
The new president of the USA, who is a Republican, has in numerous occasions pledged to follow protectionist policies, and many European right-wing parties, not only in UK, are against the EU single market.
So I would say that centre-right or right-wing politicians who are against free markets are not an edge case any more.
It seems to me that as of 2017 the major threat to free markets comes from protectionism, not from socialism.
The new president of the USA, who is a Republican, has in numerous occasions pledged to follow protectionist policies, and many European right-wing parties, not only in UK, are against the EU single market.
So I would say that centre-right or right-wing politicians who are against free markets are not an edge case any more.