Are we saying then that you can’t have a couple of conference calls concurrently or have a working sky mini box during the day at all?
No, I didn't say that - you did.
What I have said is that the network is being used in ways that it was not designed to be used. If you look at the service you signed up to, you will see that it is configured for a much lower upstream speed than the downstream speed. This is because the predominant use was for downloading video and games. With many users now using two-way video, that balance has changed.
Like all of us, you can use the network in the way you want. But again like all of us, you can either put up with what you get or find another network that better serves your needs.