No doubt. However how do you think most of us learned to do anything? (any "I learned on the Amiga" replies will be put on my list)
As far as signing keys* then for the most part nobody gets those -- the PS3 (which in turn gave us the PSP) was so far the only exception we have ever seen, everything else being a workaround. I imagine the sorts of people that can make a presentation like linked earlier (or the various ones you might see for the 3ds, Wii, PS3) will have checked to see if MS screwed up hard enough to give us those. This then leaves brute force (not going to happen), MS leaking them somehow (can happen -- MS source code leaks often enough, Nintendo saw that whole gigaleak), someone tricking MS into releasing them (I imagine they have protections for that, and they are probably not accepting new third party code at this point anyway), MS screwing up a dashboard update (we did see an update recently, and various countries often have laws added on that need you to say OK, unlikely to include a bug that breaks security but who knows), MS releasing them of their own good will (unlikely, or at least unlikely before about 20 years from now), someone making a suitable list of prime numbers available (various security services have them/use them in the hope that something works).
*if you want a term to search for see asymmetric encryption. You have one key to sign, another key to decode. The signing key gets kept locked up tight inside MS' secure servers (or if you are Sony with the PSP then included in every PS3) as it quite literally is the key to everything.