Here's something to be put into perspective: Look at the Volkswagen Beetle. Ferdinand Porche was ordered by Adolf Hitler to built "The people's car", the Volkswagen. He was obviously a notorious tyrannic bad guy to much of the world at the time, but today, the "Beetle" has gained popularity to no end, and is quite sought after. Once it had a bad name, now it has a great name.
Same goes with Neumann and Telefunken. We love those mics dearly, yet these were designed for and used by the German Empire in the 1940's and such.
So, is it with Apple and Dell (and Microsoft). They do compete, but none of them are as horrid as the Third Reich! In fact, some people (developers) move from one company to another. It's all in the pudding. They learn their lessons (hopefully).
If it works and works for you, use it to YOUR advantage. If you "like" one thing or another, that's awesome! We have choices and can change our minds. We do live in a greater time, I think.