With Santa on his way we ask can marketing send inhibiting messages about gender

My four-year-old son wants a Barbie Town House for Christmas, and I have mixed feelings — partly as it’s a little large for Santa’s sack, partly because it’s a little large for our small house, and mostly because I just don’t love Barbie.
But the fact that it’s a toy normally marketed to girls hasn’t registered with my son, and that’s the bit I love — he’s almost five now, and he still hasn’t succumbed to the supposed gender rules of toys.