3 ms·
The key is that there is a high barrier to entry.
by aportnoy 8y ago
The key is that there is a high barrier to entry.
- brixon 8y agoMaybe, but a lot of airlines start up each year. https://en.wikipedia.org/wiki/Category:Airlines_by_year_of_establishment https://en.wikipedia.org/wiki/Category:Airlines_by_year_of_e...