100 devices does not sound like a typical residential setup but it does sound like an interesting setup.
Would be interested to see a list of the 100 devices and what is being done with them.
I never claimed to be "typical" :-) Nothing spectacular either.
O/C sensors on exterior doors and windows, Zwave locks, half dozen PIRs. Almost every light is either TCP Connected, Hue, generic Zigbee bulb or on Z-wave switch. Moisture and temp sensors under sinks , dishwasher, washing machine. Harmony home hub for entertainment center, 2 Echoes , 2 Hue hubs, Aeon HEM, 3 mini-motes.
Waiting to see if Amazon opens up multi-room playing and custom responses before getting Sonos . That's why I got new Chromecast audio, but it is far from reliable
8 channel hardwired CCTV for outside of the house with DVR in basement, 5 IP cameras for interior , 3 desktop computers, 4 laptops. 5 tablets and 6 phones half of which are used as physical access terminals for HA and to monitor the CCTV cameras over LAN. 4 Tvs , 2 Tivo DVRs, 3 Tivo Mini all with internet, 3 blu-ray players, Chromecast, Roku, Amazon FireTV. I'm sure I missed a few things.
Everything that can be, is hardwired to LAN . 8 port switch in basement for CCTV, NAS, Moca array, Moca adapters through house feeding 4-6 port switches in bedrooms and daughter's office.
I'm sitting here at the desk, Tablet to my right with the exterior cameras up, working on desktop, game playing on another tablet with old Galaxy S4 monitoring HA, while the wife is in the next room streaming Netflix through Tivo to TV while playing a game on her tablet and reading on Kindle, daughter is upstairs on her laptop, streaming music through her tablet while watching TV via Tivo Mini, on Facebook ( assuming ) on her phone.