Here in the so called first world with the decline of unions and the proliferation of large corporations, we have Walmart-like wages and working conditions that are becoming the norm.
So if you meddle in places like Bangladesh, sure you can make a difference if we lobby the government but the result may be many people will be thrown out of work and families will suffer.
We want things to change for the 'better' but careful as the results maybe unexpected.
You're right, but looking a bit further ahead (*polishes crystal ball*) reduces the surprises a bit.
Our current trade practices are the result of globalisation which in turn is the result of ever-cheaper, ever-faster transport of goods. The process has been under way since the nineteenth century when Britain became the factory of the world, importing raw materials and exporting manufactured goods. Other countries took on similar roles and, increasingly, manufacturing went to low-labour-cost countries - from the UK, Europe and the US to Japan, Taiwan, South Korea in turn. (If you're a baby-boomer you should remember cheap toys from Japan with instructions in Jinglish. If you're not, you may think Japanese goods have always been top-shelf.) Each of these countries benefited in terms of living standards and at the same time priced themselves out of the market. The sequence continues with China, India, Bangla Desh and Indonesia following the same route. Next? Brazil or South Africa? I don't know but I'm sure the sequence will continue as long as the difference in labour costs exceeds the difference in transport costs.
At the same time there is a counter-effect: the richer nations are effectively exporting their (our) own prosperity as they import goods made elsewhere, because the jobs, profits and expertise of manufacturing have all gone overseas. Unemployment rises, wage pressures fall, underclasses emerge ... etc.
Eventually we may reach a point at which labour costs are as low in 'developed' nations as anywhere else and we have reached some kind of equilibrium.
When? 30-60 years, maybe.
Meanwhile, it is on our own best interests to buy local and in the best interests of foreign workers to try to improve their working conditions.