I guess in 10-20 years we will be telling our grandchildren about the old days, where you can do whatever you want on your computer, limited only the abilities of the hardware* . And they won't believe us. *Simplification, of course.
The majority of "computers" people own are already locked down, and it seems clear that things will only get worse -- hardware is increasingly opaque and designed to do things against the interest of the user (or, to say the least, without the consent of the user).