Which one are you?
https://alphauniverse.com/artisans/
I agree that there are considerably more jobbing photographers in the world than there are Sony 'Artisans' but my point is that how many jobbing photographers have thousands of YouTube followers, or host large gallery events, or are asked to comment on other articles, or write their own popular blogs etc? I'm not suggesting that a jobbing photographer is any less skilled (they're probably more skilled going by Jason Lanier's results!) but they don't have the global recognition so any company is clearly going to push those that do because it markets their brand.
I'm glad you share your images online, we all do in some way, but does that get you enough global recognition to make a brand like Sony interested in you? Anyone can go out and buy a load of kit and tell their friends and family how good it is but that's nothing compared to someone having a recognisable 'brand'. Look at people like Steve Huff. He's been a jobbing photographer for years and used to work alongside Seal doing his gig photography but his worldwide brand has only grown in the last 5 years as a result of his blog/site gaining international views and as a result he's used by various brands to push their products through his reviews and recommendations.