Should it be necessary to have a PS2, PS3 AND PS4 hooked up all at once to play?

[brendude13]

richardhutnik said:

brendude13 said:

kowenicki said:
How else can money be made from "remakes"

Huh?

Remove backwards compatibility, remix content, and rerelease.  Look at what has been done with Halo and also a number of PS2 titles on the PS3.  There is HD remakes.

I didn't get how his answer linked into the question.