PKR
Veteran
That misses the point, which is the more exposure a photographer has, the more work they are likely to sell.
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In my case, and in the cases of many others in my field, it's select exposure to a particular set of individuals that's important. Exposing my work to the general public, is a waste of time and energy for me and others. I sometimes spend serious money on a portfolio of work that's created to impress just one person, or group working at one agency.
For me, putting my work on the web would be an act of vanity, and I'm not inclined in that thing.
More exposure on the web (there is some by agents) get's me nothing but trouble and image theft.
So, you're wrong in your remark, as it pertains to many working photographers.