Sorry but Apple is an luxury brand tech for mainstream, and the only one.
First, you can't have "luxury" and "mainstream". They are mutually exclusive. Apple is a mass market brand, there is nothing luxurious about it. Their products cost the same, they perform the same and they pretty much look the same as everything else out there as well.
Second, even if it was a "luxury" brand, there are tons of others out there as well. There are lots of them on the HiFi market. Vertu would be the luxury brand in the smartphone market, and I seem to recall that TAG Heuer had one as well.