[rje]

No, any indie who wants to can apply to be a ps3/ps4/vita developer. There are some minimal requirements but I haven't heard of folks getting turned away.

On top of that Sony has also been actively courting indie developers with interesting games and doing things handing out 'loaner' devkits to make the development process less expensive.

I know several 1-5 man teams that are working on Sony titles and they are all very happy with their relationship with Sony.