164 are members of the WTO.
28 in the EU.
3 in NAFTA, etc.
In the EU there 23+ official languages.
23+ job markets.
How many languages can a real human being speak to be able to use them (read, speak, write)? 2, 3, 4, 5?
Language may be part of one's identity but Babel was punishment not a gift.
People from large countries do not mind that too much.
But if you come from a country of 1 million or 5 or 10, you do.
The EU has 4 freedoms, one for each of the following.
It makes 100% sense.
Language can bring us together.