Maybe it's not same as satelellite, but I wouldn't say that image quality of IPTV is very poor. There is some providers who have bigh bitrate channels in not compressed quality, 50fps image and even some 4k channels. Satellite is good, but also have some disadvantages, like it don't work very well during strong rain.
Even the best-tuned satellite dish will not be able to receive the signal in some extremely difficult weather conditions, such as heavy rain or snow, but this has rarely happened to me. What happened to me a lot was a break in the internet connection that used to last for several days, and then the IPTV was completely useless.
I have to say I agree. Even when buying premium IPTV (the hardware plus their own dedicated VPN), I find the live streams for sports, football especially as OP would like, is never reliable enough when it comes to the actual game. It's actually much faster to search for an available stream with a web browser than it is on any IPTV app (Yogurt, Kodi, hardware).
When there is the biggest load on the servers, then problems arise - this is something that even the largest legal providers cannot prevent, let alone those who try to cram as many users as possible onto one server. And then the owner convinces you that the problem is in your internet, in the device you are watching on or in some mysterious force that disturbs the whole thing.
