Rather than compare the "hobbiest toys" linux and Hercules, I'll compare the hobbiests Linus Torvalds and Roger Bowler.
Linus studiously avoids having anything to do with anything except Linux. He pays no attention to Windows, AIX or whatever. He just improves his "toy", with the result it is taking on the world on its own merits.
Roger, on the other hand, is paying an unhealthy amount of interest to what someone else (namely IBM) is doing. And (Turbo)Hercules is seriously suffering in consequence.