Solo Queue (and competitive)
Is just NOT the place to be picking 'late game' picks TM. Vayne/Nasus imo are the biggest offenders along with Kog. Just your pick alone REQUIRES the team to pool all resources into you and pray you click and even then there are plenty of champions that can outdo you late game even unless you are miles ahead.
Sorry but the Doublelift mentality is a plague on Solo Q and no adcs' can NOT and will NOT solo carry games if you pikc dat vayne. or that nasus/veigar w.e slow, weak early game champ you picked in the hopes of gloriously 1 v 5ing. The only way this is happening if you are a diamond/challenger tier vs plat/gold levels