He went thru a difficult divorce around the same time Marvel was brought by Disney so I think his license lapsed and his business went into extended hiatus. I'm not sure but I think he has been working for other companies like Sideshow. For sure he didn't go out of business. His work is one of the most sought after and he is regarded as a pioneer in the business. There is also a lot of fans still waiting for him to resume production but I think the long period of inactivity has to do with his divorce.