Shut down golds

Hey guys, I know there should be lots of discussion about this topic, but I really want to talk about this again. Wish I can have some feedback. So what I want to say is, for example, I am playing Vayne, and my enemy is Cait. She is always trying to aa me, or use her Q to do the damage during the laneing phase. So what I can do is, trying to dodge those aa and focus on farm. 10 mins later, I have to B couple times to reset because Cait pressured me a lot and I don't want to be dived by their jungler. In this case, Cait got 3 plates gold which is 180*3=540. However, due to I focus on farm only, I got 20cs lead, and that makes me worth 450 to get killed. So you know my question now. Don't say Vayne can do much more dmg than Cait in late game. Yes, it is true, but if we make both camps be considered now. If there is no one can touch Cait in my camp, but full of assassins in Cait's camp. Even those assassins didn't get any advantages in the early game, and they can still one shot me. We all know that assassins players have to make plays in early game, sometimes "no lead equal to lost". However, in my story, they don't need to try harder in the early game, they can wait until the middle game when Cait giving pressures to other lanes, and I am trying to farm up alone, so they can sneaky to my back and get me easily. If I group with my teammates, then there will be no one in my team can grow up, because we share one lane gold. Remember, Cait is hard to reach, so they can do 3v5 in the mid lane, even lost 1 or 2, but other two can get side lane towers or drake, then we lost control of our jungle, then their assassin can do things now. So please tell me, how could the system see either champion or players are better? I played Lucian, and enemy played Kog. Because I focus on early game so I lost some farm. Kog's aim is late game so concentrates on farm to make late-game happen. Finally, I got a chance to kill him at 15mins and earn 500gold. So that I can destroy his late-game dream now.