

You are in luck then, because both are climacteric fruits, meaning they continue to ripe after being harvested, due to producing ethylene gas that triggers the ripening
Throw them in a paper bag and let them rest at room temp. If you want to speed up the process, add a ripe banana or apple (or other ripe climacteric fruits)
You might have eaten a different cultivar than those exported. In that case, I agree, there are so many different varieties that we never get to taste, supermarkets usually only have 1 or 2 different types