Why are Indian bikes not as reliable as Japanese bikes?

This could be a bit controversial, but pls hear me out.

If you browse this sub or google it, you will find that the Japanese bikes are what people say are "most reliable". This is true. However, I don't understand why our (Indian manufacturers) cannot compete against that? What are we lacking? Also, I am not saying that Indian bikes are not good, but compared to the Japanese bikes, our bikes are not just that good.

Is it just the general perception about the Japanese bikes that overshadows the quality of Indian bikes?