ESO is 150 hrs of content enough ?

Spellforged

I'm pretty sure that's just referring to story/leveling content between level 1 and 50.  That's excluding end game activities like raiding, PvP, crafting, etc.  Anyway, 150 hours to get to max level is pretty standard for MMORPG's these days.  Most people spend 90% of their time doing end game activities and the leveling aspect is hardly anything compared to that.