It's the convenience of it all in 1 place.
I have Netflix UHD, Amazon Prime, Terrarium, IPTV for US sport channels and BT sport, NOW TV for Sly Sports/Movies and all that costs me less than £5 a month.......but I have to keep switching between box and TV and loading different apps.
I then have genuine Sly Q as the wife and kids prefer it, they want it nice and simple......this only has entertainment and kids channels... I got a really cheap deal but it's still more than I pay for all the above.
If they had their way I would be paying £90 a month to Sly, not a chance......my setup is less than most IPTV and runs better. They wanted Sly to watch 'everyday' TV, so I gave in and got it them.
I'm using genuine Netflix and NowTv, so no buffering/freezing. I only use IPTV for sport that is not on Sly Sports.