Just saying: Freeview is probably the biggest, and the easiest market (no negotiations needed). A plain Freeview viewing box is pointless because every modern TV does it, while a box is £25. Freeview recording would be where the money is, decent recorders are >£200.
Humax has enormous storage with a decent user interface. And here's a big problem with all user interfaces: You just can't check them out in a store. There may be something with a better UI, but it's impossible to find out. So my next box will be Humax again as long as they don't mess up the UI, because I'm not willing to take a risk. Now with Apple, I might trust them to make something that is better. And I definitely trust them to make something that I can check out in the nearest Apple Store. So for that alone, they could sell a lot.
Now if you combine Freeview recorder, decent CPU, a good UI, displaying iPhone, iPad, Mac, and some good advertising, you've got something to sell.