see the thing is i bought psp comics too but i soo do not care. they also were cheap so it was not that bad. (probably why i do not care is because the comics i did like they never seemed to complete them so yeah.)
still though i rather have the hard copy of a comic but that is me. sure would i buy digital comics again from sony if they brought another program like it. sure i would as long as there cheap as well.
on a side note i think why psp digital comics did not do that well was because you had to install a extra add on that was kinda putt away in its own side on the internet.(was a pain when i first instailed it.) all the psp apps really did not update well they never felt apart of the design. if they did it for the ps vita it would work better since the ps vita is more designed with stuff like that in mind. (also they could put everything onto psn instead of somewhere else online.)