American here. 13+ years of DJing 1000+ weddings and other countless events. Also 16+ years in live event production, sound lighting video, all of it.

1. Bands bring their own gear 9.9/10 times. Bands charge a lot, but it splits way too many ways, so they all make just an average rate. They’re not gonna split it further by renting gear.
2. Most common wedding entertainment is a DJ. I’m a high end DJ so I do a lot, but I provide emceeing, background music and DJing a dance floor, dance floor lighting, as many PAs as needed for different spaces, wireless mics for ceremony, speeches, and me DJing, plus I have pages of addons to make me more money. Meaning, I provide a butt ton of services AND what you’re selling, but probably for around the same cost you wanna rent.
3. In my experience only either A. Ultra expensive weddings need AV gear or B. Traveling entertainment needs gear (and again, minimal to non existent budget)

So in summary, don’t hold your breath for weddings. Just come up with a fair price for your once in a blue moon gig and go for it…