Performance?
If there was sufficient interest in it, most performance issues could be solved. Look at Python or Javascript, big companies have financial interest in it so they've poured an insane amount of capital into making them faster.
LuaJIT can be extremely fast
If there was sufficient interest in it, most performance issues could be solved. Look at Python or Javascript, big companies have financial interest in it so they've poured an insane amount of capital into making them faster.