It's great that artists can make a living without gallery representation, but I think there will still be bricks and mortar art galleries around in 100 years. The one similarity that all the artists above have, is that they are mostly selling small paintings for affordable prices.
From what I have seen and experienced, collectors are hesitant to buy large and/or expensive works online. As great as the internet is, you just can't experience a painting like you can in an art gallery.
There's also the trust factor that the internet has yet to solve completely. People are willing to risk a few hundred dollars on a small painting, but getting a collector to part with several thousand dollars online is much more difficult.
I previously mentioned an artist making up to $25,000 a month selling paintings on eBay.
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