What a twist, players in multiplayer games have different playstyles. PROTIP: the same is applicable to civ5 multiplayer.
Also your comparison is incorrect, because MOBA is essentially a dumbed down version of RTS, so you technically should compare RTS to TBS. However, despite RTS having an advantage of clear as crystal mechanics (you can easily pin-point what exactly lead to your defeat), you can't have 20hr long game sessions in them, without dying from borefest.
After the early 00's the RTS genre is almost the same. Nothing major. It is much easier and faster to see what you did wrong in mobas. Death (penalty for losing) is rather obvious. What people dont understand is that you dont have to build full items to win. Dota/Lol are following this. If the game hasn't finished in 25~35mins you did something wrong (dying, not going for the right objectives, poor mechanics).
You see X unit? If you lose X unit you lose Y damage and some utility. You also should destroy the enemy X unit or force him to move to the Z location so you can kill the other soldiers easier. Ain't that the same formula in RTS too?