Why was the self sufficiency model unable to help India reach its development goals?

Used many barriers to trade
To import goods, foreign companies had to have a license.
Process was long, several dozen governments had to approve it.
Once a company had a license, government restricted the amount they could sell.
The government imposed heavy taxes on goods ( doubled for consumers)
Money couldn’t be converted to other currencies.
Businesses were discouraged from producing goods for export.

They immigrated for religious freedom