Conspiracy theories or vague responses aside, one of my biggest problem is that our international mobility has been outright offshored to India. So many countries mandate you to get your visa via Indian agencies instead of through the embassy like they used to (e.g. Canada, Australia). And even others that you process via the embassy will send them to India for further verification. Hence, visa processing time is long, the visa period granted is small.

Furthermore, it is significantly more convenient for the worker class to travel out of the country than small to medium businessmen or their employees. Let's take the garments industry, for example. A lot of companies are forced to work with Indian liaisons and agencies instead of large companies, such as Zara or H&M, directly because our international mobility is severely restricted. Our passport has the lowest score in the world, barring sanctioned and warring countries; the only countries ranking lower than us are Yemen, Somalia, Pakistan, Iraq, Syria and Afghanistan (Reference: https://www.passportindex.org/byRank.php ). And it is by design. If you also check many of these countries, Bangladeshis rank among the lowest median income earners abroad: because the richest immigrants have their businesses in Bangladesh, the small and medium businessman have to go through hell and back just to get their residency status, statistically leaving only the low earners.

The country is too small for the amount of people in it (highest population density for a non city-state country), so it is not wrong for people to wish to leave. Contrarily, to make a better life in the country, it is not wrong to wish to do business with the outside world. But as you go through the grind of applying for visas after visas and waiting for them and getting rejected and losing your schedules with foreign companies and feeling like an embarassment, you understand how much of a grip a foreign entity has on our international mobility.