You mean simple things. The preamble to the GPL is longer than the entire ISC license... by like 5 times. GCC is like 100 times more complex than PCC. BSD folks like simple, secure things.
[1] http://www.openbsd.org/papers/magnusson_pcc.pdf [2] http://blog.llvm.org/2009/12/clang-builds-llvm.html
ansic: 869244 (70.89%)
ada: 150280 (12.26%)
cpp: 114629 (9.35%)
f90: 34164 (2.79%)
sh: 18588 (1.52%)
objc: 13047 (1.06%)
exp: 8821 (0.72%)
fortran: 7139 (0.58%)
asm: 4422 (0.36%)
ml: 2485 (0.20%)
perl: 1080 (0.09%)
awk: 842 (0.07%)
lex: 589 (0.05%)
yacc: 587 (0.05%)
pascal: 105 (0.01%)
haskell: 98 (0.01%)
lisp: 59 (0.00%)