This is also why I agree with Louis Rossmann that you must own your platform. For folk that can't do that it's Ebay, Amazon, and such.
I have been selling on eBay for over 13 years. This morning I awoke to an email notification that all my listings had been removed and I was permanently barred from selling on the site for not meeting minimum seller requirements. I can assure you that after 13 years of selling, over 20,000 transactions, and a feedback rating from customers of over 98%, I was doing a more than adequate job. Also, I have run two small businesses in New York City for over a decade and can further assure you that business was being conducted well.
I called eBay and spoke to representatives there (after being put on hold for over 30 minutes) and was told they no longer wanted my business and that this could not be appealed.
I did not receive any notifications from eBay that this was going to happen. Daniel, from the eBay leadership team, could not find any emails sent to me from eBay indicating that this was going to happen to my account. I was also informed that eBay does not call its customers (although I receive sales calls from them for new products regularly).
When I checked back in my account history, I did receive a message in January indicating that I was not meeting minimum seller requirements and that my PayPal funds might be held up because of this (no indication that they would ban me from selling permanently without appeal). This same email was sent again in March. The requirements I was not meeting were:
1. My minimum picture size was not large enough on many of my listings
2. I was not uploading my shipping information to eBay rapidly enough (my items were being shipped, but they now required that sellers enter all shipping information on eBay)
So what happened? I know eBay has been pressing its sellers to ship items through their shipping service, which I did not do regularly. I also know eBay has been looking to make its site more mobile friendly, which is why the image requirements were put into place. But otherwise, there must be some other reason they want to restrict and control selling on their site.
eBay is a hobby for me (granted, a hobby I have made a good amount of money from in the past), but to many people like me, they have come to rely on this income to survive. I fear the monopoly like control eBay has over the online auction business may be being unduly exerted here.
PS - approximately four years ago I decided to sell one of my eBay product lines through my own website. I made this decision at the time when eBay began limiting what I was able to sell online. The major infraction at the time was that I was selling vintage eyeglasses from the 1950's and used the term 'similar to the ones Buddy Holly was famous for wearing' in the description of the item. I was informed that using the name Buddy Holly anywhere in a description of an item was not allowed.