If We Want Carries To Be Weaker Early Game...

We must make them actually have to wait to get to their late game. How? Make them have to pay larger amounts of gold in order to get their items. Let us take a look at the items here:

Standard/Example Full Support Build- (about 6 lets say) Total Cost: 12300 Gold

Standard/Example Full ADC Build- Total Cost: 15800 Gold

A mere 3500 more gold is what separates Supports from ADCs in League of Legends. Now, bare with me here, but allow me to make the same difference between a Support and a Carry in Dota 2. I know the games have their differences and that gold income is a little different in that game, but let's just look at the difference:

Dota Support Build- Guardian Greeves Pipe of Insight Spirit Vessel Aether Lens Glimmer Cape Eul's Scepter of Divinity Plus some consumables like Wards, Smokes, etc. ~20025 Gold

Dota Carry Build- Daedalus Boots of Travel Silver Edge Desolator Eye of Skadi Mjollnir Moon Shard Plus maybe a tiny number of Wards (lets say they bought 3 wards for a total of 240 extra) ~32210 Gold

In Dota 2, the difference between a Support and a Carry is about 12185 Gold. The difference between a Carry in LoL and in Dota 2 between their Support is huge. An ADC is LoL is at most about 1 large item in gold difference apart from their Support in total gold usage at full build. A Carry in Dota 2 is about 2-3 large items apart in gold difference from their Support. As someone who plays both games, the amount of effort between how much the Carry in each game has to farm is extreme. Carries in Dota 2 commonly have to gorge on every access of gold income on the map if they want to REALLY accelerate themselves to late game. ADCs in LoL usually just have to fairly casually farm and roam with their team to get enough farm. I'm not saying Dota 2 is a better game. It DOES have it's faults and many at that. However, in this aspect, I must say it performs much better.

TL;DR ADCs in League of Legends get off too easy when it comes to how easily they can obtain a full build in comparison to their Support. For a class that is supposed to be a late game class, they are commonly on just the same power level of other classes throughout the entire game unless the character is nerfed to the ground early game, which is rarely the case. The gold cost on their items should be increased if Riot wants to continue to advertise ADCs as a late game, scaling class.