That is not at all how the defense industry works.
The military invented modern procurement, of which sales is an important part.
There might only be a handful of countries any one country will sell to (50-75) but each country will have multiple armed forces, potentially hundreds of police departments, government agencies etc. etc.
Then there are private companies that may be allowed defence related tech, such as non lethal area denial equipment for shipping or oil in hostile areas.
The military invented modern procurement, of which sales is an important part.
There might only be a handful of countries any one country will sell to (50-75) but each country will have multiple armed forces, potentially hundreds of police departments, government agencies etc. etc.
Then there are private companies that may be allowed defence related tech, such as non lethal area denial equipment for shipping or oil in hostile areas.