Is a satellite system still necessary in new buildings, or is IPTV sufficient?

I consider this a very dangerous, at best half-truth. Grounding and especially lightning protection of antennas – including offset antennas used in satellite technology – is a science in itself, which in my experience only very few electricians master, not to mention laymen. As long as nothing happens, nobody cares, but the consequences can still be devastating in case of an incident. For me, this is another reason to do without satellite.

(I’d rather not ask now about the corresponding implementation with .)

Everything that is more than 1 meter below the roof edge does not need grounding.

For grounding and equipotential bonding (PA) of antennas, the "outputs" of IEC 60728-11, German classification DIN EN 60728-11 (VDE 0855-1), are primarily decisive.

The changes that have occurred over decades have basically remained stable and comparatively easy to oversee, in contrast to the other parts of the series of standards for antenna systems. Even more incomprehensible are the knowledge deficits of many EFK, my dying RFT guild, and also of EFK and IT people.

Competence is certainly not gained through verbal sweeping attacks against standards that one has not dealt with so far. The installation of standards-compliant antenna systems is not rocket science.

As already written, sometimes a set-top box is needed, I've seen it already, looked great.

Unless the provider offers the signal as DVB-C, then you're just happy if you get all the programs in HD without extra costs, which I have to pay anyway for reception. You pay for the satellite system once and then it's fine.

The user @Dipol can explain everything in detail.