It's incredibly and artificially limited to what you can do on these devices. But let's just throw in the bit that folks hate discussing but needs to be said: these devices are limited as such not because of the willing minority such as yourself that are savvy enough to do those things but because the big corporations will never make a dime if somebody were able to purchase something and in 10 years, still be able to update, alter, manipulate that device. That big corporation would lose out 10 years of purchases - scarier if those savvy people were to share their findings and teach others.