One of the things manufacturers use patents for is to maintain quality and thereby there's and the product's reputation.

But before India scrapped patent laws people with HIV were taking 20-30 pills a day and now they only have to take 3. That's clearly better.

The patents meant all the separate drug companies wouldn't get together and find a way to combine their pills but without them suddenly combined pills are the next big profitable product everyone wants to find.

If you are just trying to produce something which already exists at a cheaper price then you aren't going to get the same benefit.