Haven't heard from him in a really long time too.
I just checked his whois to see some registration info. The registration database was updated last December and he's paid for the domain name until March 2031.
But looking at the big sign on his website, he seems to have stopped making any kind of modification (big "taking time off to recharge" banner).
I'm starting to think that the business isn't what it used to be and he's contemplating what to do with it.