Please do explain to me how a two-USPTO-patents-an-year country not exactly well known for producing researchers or engineers will develop "core tech".
I am very much interested in knowing.
Your ECI score wouldn't have been so pathetic, if your workforce had skills/ education anywhere near what you claim they have. .
You're not "limiting" anything. No one is bothered about investing in Bangladesh, despite all the tall claims made by your government.
You don't even have the skills or the infrastructure to manufacturer anything decent at any significant scale. Heck, you even lack a decent logistics sector which is essential for modern supply chains.