I'm not sure I understand entirely what you're getting at here, Izabella.
Taking Bentham's most well-known axiom that happiness "is the greatest happiness of the greatest number that is the measure of right and wrong", I suspect that's all that can be expected.
It's the basis of democracy, which has, however, been defined as a tyranny, because it discriminates against minorities.
Bentham was amazingly 'modern' in his thinking, but of course, died in the mid nineteenth century, so didn't live to see unintended consequences of his thinking.
At the time, the British Empire controlled much of the world - and the banana plantations. Therefore, it would have been easier to control working conditions than it is now, although governments weren't keen on intervening at that level. The government could have passed a law protecting the rights of banana pickers or it could have put moral pressure on the owners and buyers and allowed supply and demand to take its toll.
It was moral pressure which eventually led to the abolition of the slave trade in law, although the slave owners had to be compensated generously.
Capitalism and markets are now a fact of life, but they depend on freedom of movement - for all the factors of production, which include humans, to be fully efficient. I don't think anybody has fully grasped that humans like being treated as individuals and not just as a factor of production.
Robert Owen, the utopian socialist, was one of Bentham's students. I expect most people know about the New Lanark mill, which was designed to offer the workers humane working conditions. However, even they were quite strictly regulated and workers had to follow what Owen thought was a clean way of living.
Anyway, sorry to ramble on. One of the effects of globalisation has been the rapid spread of ideas. Bentham and Owen contributed to nineteenth century reforms for workers, but the motivation for their philanthropism has been questioned. By producing healthier and happier workers, they also produced more efficient workers, who helped create the great wealth of the British Empire to the detriment of workers in other countries.