People seem to intuitively feel like there is a difference between they see as authentic or inauthentic. I'm showing my age here, but there was not the same response to, say, the Bestie Boys, ad Vanilla Ice, and that wasn't just because of the quality of what they did. People thought the latter was taking on a role to make himself seem something that he wasn't, whereas the former were just reflecting what the style and tastes of their peers were. And who trusts someone who is a faker?
Any time a style becomes popular though, it will get taken up by a lot of people, and may be be commercialised. If we started to see Bollywood films become wildly popular in the west (which has happed a little bit) people are going to be influenced by that, just like they were influenced by Madonna in the early 80s. That's not people being fake, just young people (usually) emulating their heroes.