Sorry to bump this slightly-aged topic, but I have some new information about this that I just came across in the last week.
My comic shop, Acme Comics in Greensboro NC, is an awesome place. The guys who run it are really friendly and they love what they do. And it's a great shop. I've been shopping there for about 18 months. Back when I started, I told them that I do a lot of my comic reading electronically, and they pointed out that they have a storefront at ComiXology. Basically, I could go through their website, purchase comics through their front-end, and then read everything as normal on ComiXology. But Acme, my LCS, would get some credit for it (how much, I don't know). Now, their front end was coded by a friend of the owner's so it was not as elegant as ComiXology's. It was slightly less user-friendly. But I went to the Acme front end anyway, to support my LCS.
Well, last week, for the first time since this sale was made official, I finally got back around to catching up on all my electronic purchases, and I tried to go to my bookmark for the LCS's front end to ComiXology. Guess what? Dead link. I thought maybe they changed the address, so I went to their website. There's nothing there anymore about buying digital stuff through them.
Today, I asked the owner about it. He said that once Amazon bought ComiXology out, they pulled the plug on local vendors being able to participate. He can no longer get any credit (or money) for my purchases on ComiXology.
I used to buy a lot of stuff from Amazon, but after this, they've earned a spot on my list. Now I will not buy from them unless I have no other choice. And I will now have to go out of my way to buy trades instead of digital stuff.... because I'd rather support my LCS than Bezos.