I remember when China was poor and everyone was talking about how their communal society guarenteed poverty. Then they started getting wealthy and the story became their communal society was what allowed them to be wealthy. The US is similarly either propelled by or crippled by their individualism depending on whether they've had a good year or not. India will no doubt be similar.

IMO the evidence suggests it is mostly tax policy and whether people are allowed to start and run businesses. Culture is important insofar as it affects those areas of policy. Getting wealthy is literally as simple as being able to create new wealth and keep it, plus lots of time. People don't choose to stay poor unless someone with a gun forces them to be poor.