PS4: An all in one solution

Hello

I'll come straight to the point. I have sky, DAZN, Prime UK, Netflix UK and Express VPN. I''m thinking of getting a PS4 and and want to know if it can support all of them so I can switch between them like I can on fire tv?

Thanks in advance

Considering the picture used on Sky's site suggests most of the apps you want to use are on the home screen suggests its easily possible to put the apps on the start screen:
https://www.sky.com/help/diagnostics/sky-go/set-up-sky-go-on-your-playstation-four (step 3)

Then all you need to do is Dazn (whatever that is) and ExpressVPN is documented here:
https://www.expressvpn.com/support/vpn-setup/stream-to-ps4-with-dns/

I don't know what DAZN is, a quick Google suggests it's a sports streaming service?

Yes it is. Its like a Netflix of sports.

And not meant to be available in the UK (which explains why you haven't heard of it, Neil Jones).
https://en.wikipedia.org/wiki/DAZN

Hence the use of ExpressVPN, I'm guessing,

Didn't realise it's pronounced "Da Zone"