Well the Sony has no internet connectivity at all, so unlike the Kindle, there is no way at all for Sony to send a remote "delete" command. The two are completely different devices, by different companies. It's like refusing to run Linux because Apple is restrictive in its iPhone app store.
Well yes, but isn't his age a big part of that? Don't forget this Kirk is nearly a decade younger then the "old" Kirk was at the start of TOS. That time could easily be what was needed for the shift.