I switched Internet providers last year after I dropped cable TV from the primary provider in my area.
First I though the installer would want to drill hole and pull new wire. I told him, "If you connect to this (outdoor) splitter, it does direct to my modem." "Sounds good !" He replaced the splitter with a grounding block.
Second, I thought I would be on the phone with tech support for hours getting things running, especially since MY modem is over 10 years old. SURPRISE #2 ! The installer asked for the MAC address, typed it into his laptop, I rebooted the modem and everything was perfect ! I have not had any further interaction with the company in 9 months.