keepingquiet
It isn't inevitable that all little girls like Disney Princesses. They just like Princesses- the Disney label is what we put on it, and because the merch is everywhere we buy it.
My GD also loves unicorns and mermaids, but they don't have to be Disney either.
No, it certainly isn't inevitable. As I said, my daughter was never a 'girly' girl and wasn't into anything pink or princessy. She was much happier mucking around in the garden, climbing trees or at the stables with her pony. She did like Disney films though. I'm hoping my new GD will be the same...