Just another chest-thumping Bronzie taking that game at face-value.
First of all, TSM didn't have reliable hard-engage. Their best shot was either for a Rek'Sai flank or a Maokai teleport/Maokai flash snare. So telling TSM that they should've initiated harder is completely idiotic.
The few fights they tried that, like when Dyrus teleported to the mid lane, they lost because C9 drafted hard disengage, which counters soft engage. They had Nautilus, Sivir ult, and Gragas ult, not to mention Rumble ult to keep the enemy backline busy.
Oh, and that was the first game of the split. Think twice before making threads that berate people who are at least a million times better than you.