In TB systems other NPCs are not "frozen" while you take your turn. That is a fundamental misunderstanding of the system basics.
They - defend. Through several mechanics which may be resistances, interrupts, or dodging and armor mechanics. Depending on exact game design.
The problem of initiative was not in initiative itself but in what you can do with it if you exploit it.
RTwP has its own kind of problems and cant be so directly compared to TB systems at all.
That serves no point at all.
