Wow 2 Grand for a made in Asia product with 40-50 bucks worth of components slapped together and a buck fifty worth of labor.
You obviously haven't used and don't own a Denon. I've used, was very impressed, and bought another brand with similar features. If I hadn't used the Denon, I might have purchased inferior products because I didn't know that such features existed. Instead, a high-end Denon defined my shopping list - if it wasn't better than the Denon - reject it.
Do their receivers already come with ethernet/wifi then?
My AV receiver, my DVR, my BD player and my TV all have RJ-45 Ethernet jacks. I need a gigabit Ethernet switch for my home theatre cabinet.
But, these components are not sold at Wal-Mart. Native Ethernet (usually via wired RJ-45, but since RJ-45 to 802.11 adapters are under $50 any device can be made "wireless") is common on higher end devices - the only device in my home theatre setup using 802.11 is the Latitude X1 that's my music player (connected to the 600 GB music library on my home server via NAS).
What purpose does networking serve on them already?
Firmware upgrades automatically downloaded, TV schedule updates, Netflix, remote access (I can add items to my DVR schedule from any browser from anywhere in the world), other online services (Amazon, for example),....
If your AV component doesn't have a page for "Network settings" in the setup menu, it's an antique.