You're wrong. Both .com and .net are signed (`dig RRSIG com.`), and if they screw up, then all the com/net zones will become inaccessible.
Sssshh, don't give Verisign any bad ideas!
Virtually no zones under .com/.net are signed, which was the only point I was making. It has no adoption here.
Sssshh, don't give Verisign any bad ideas!