'competitor countries' is a correct and usable phrase in written English.
You can use it when referring to two or more countries that are in competition with each other. For example, "The two competitor countries are France and Germany."
Beall described that as tiny compared to the UK's competitor countries.
It's vital we do this in convoy – the UK cannot unilaterally adopt significantly more demanding standards than competitor countries.
"Our competitor countries are trying hard to get these migrants to stay and contribute to their economy.
It warns that industry costs are a "major problem" and need to be reduced by up to 35 per cent to match competitor countries in Europe.
Manufacturing's share of output and employment has dropped, though it remains larger than in most competitor countries (see chart 3, above).
Mr Chichester replied to his constituent, politely informing her that while he supported such targets, he would not vote for it without competitor countries doing the same.
And as we know, to remain global competitors, countries must deploy all of their resources.
In these businesses, IBM does not feel threatened by the rise of domestic competitors in countries such as China.
It was clear, too, that they would need the kind of government support available to their competitors in countries such as Germany.
For those, the pharmaceutical multinationals and their generic competitors in countries like India submit bids to international agencies like Unicef or the United Nations Population Fund, which handle distribution costs.
He pedaled away from a larger Israeli news media contigent today, without a word, competitor and country down to one race.
