Ha Ha HA ... come on now guys ... do you really think Sony are idiots? Do you really think they will be retarded enough to put the library of the old PS and PS2 and PSP games on the fucking Vita? Grow up boys and girls: Backwards compatibility=less business for new games=less profit for the new console. That is how the minds of Sony and Microsoft work right now. So kiss the chance of seeing all those old and good games goodbye, they can't have old gold selling at discounted price steal the sales from the new shit coming out. (I'm not saying that evey new game released is shit, I'm just saying old one are proven good by time while the new ones are just sequels and rip-offs of the old with only the ocasional original ideea)
Be honest with me: IF you had 60 dolars and had to chose between buying ... let's say FF15 on the new console, or shell out 40 dolars for FF7 on the handheld: which one would you buy? Because I would buy the one I know is good and i enjoyed and let the whateverthefuck experiments of Squeenix gather dust until reviews and a discount. From a bussiness standpoint backwards compatibility is bad business. I mean if they released the PS4 and said you could put in and play all your PS, PS2 and PS3 disks, the number of people actualy buying the new games that come out would be pitifull compares to people buying discounted old games from the old generations that maybe they didn't get the first time. And don't say it would boost sales. You don't understand basic math. People would rush and buy old games that they must sell at lower prices like 40 dolars instead of buying the new ones that cost 60. It's just common sense to buy the proven good cheaper one versus the more expensive new one, at least if you are not the kind of guy with 0 financial smartness or the kind of guy with so much money he can buy an army of slaves to tend to his every need. And for every potential sale they loose 20 dolars and that adds up.
"Oh but they would make it back with selling console units" ... perhaps. My view is anyone who wanted a PS4 got a PS4 anyway, backwards compatible be damned. Maybe they could have swayed a few more MS fanboys to the new console, but even then those guys would mainly buy old PS games to make up for the library they are abandoning. So in the end they would still be making less cash than they would in a world without backwards compatibility. And Jim allready taught us what these blind greedy idiots want: ALL THE MONEY NOW!
I will grant one thing: backwards compatibility would force new games to go on sale sooner to avoid the situation described above and that would be good, and in the long run backwards compatibility and releasing old libraries on new systems would make the industry a better place and bring more cash in the long run. But these fuckers don't care about the long run. They care about how many digits the number meaning profit has at the end of each day and how they can make that number have eveb more digits by any means.
TL;DR: Let it go, it ain't hapening.