Does everyone that has a PSN have playstation home or is it only available to some people?

May be...

i have it

Home is in open beta. While it has still not been officially released, any PS3 can download and use it.

everybody with a active internet connection can download it.

but yes.

everyone does.

its available to every one now who as a PSN account of course

its available to everyone

why would it only be available to some people

I've got it

me 2