Why not internet provider? Verizon's infrastructure costs money, too - should they also be eligible for a 30% tax?
The data will be transmitted through Cisco routers or Nokia's BTS - it costs a lot of R&D to develop those
What about the phone manufacturer - Xiaomi or Samsung would definitely not reject their fair share
None of this would happen without electricity - power transmission companies deserve a portion
There really isn't a coherent moral argument in favor of the current status quo - it's simply about market power, nothing else