This is mainly because India does not pay much attention to some patent measures, and it does not have any intellectual property protection, so some low-cost generic drugs often appear in India. Of course, this kind of medicine is also very effective. It just doesn't pay a certain patent fee like some large foreign companies, which makes its medicine very cheap and very effective. Therefore, it is normal for many countries to import some low-priced generic drugs to India.
This is mainly because the Indian people are very poor and cannot afford some very expensive drugs abroad. That is why the Indian government encourages some domestic pharmaceutical companies to imitate drugs. Because this can solve the problem of difficulty in taking medicine for the Indian people. However, this has also been strongly condemned by the international community because India has infringed on the patents and intellectual property rights of other countries. However, the Indian government does not care about these things for the personal safety of its own citizens.
So this is based on the development of Indians’ national conditions to become such a global pharmacy. Of course, this also reflects the poverty and backwardness of Indians. If not for this, India's generic drug technology is not so outstanding. Of course, this is inseparable from the support of the Indian government. If the Indian government does not support India's work on such generic drugs, Indian people will face a large number of diseases and even endanger India's national security.
So this has evolved based on the national conditions of each country. Of course, we should also respect other people’s intellectual property rights and invention patents, because they have made a lot of financial investment through a lot of scientific experiments. Only one can invent a drug, but India has made other people's research results lose any effect through low-cost imitation.