Well, this gives the false impression that you have to pay to be competitive in LoL. Which is far from true. The only thing that can be bought only with money are: skins, name changes and transfers between regions. The things that make you actually stronger (runes, levels) can't be bought directly with money. You can spend money to accelerate your's account XP progression (by a factor of two). But that's irrelevant for first account, as it's not the account that is the limiting factor - I'm pretty sure any very good player can make a level 1 account and beat me hands down using it, as I can beat with a level 1 account a person who just got max level with XP boost.
After all, we talk about a game where you have over 100 champions with completely different skill sets, over 100 in-game items to buy, all creating a huge array of possible plays and counterplays... That at the same time requires split-second reflexes, maintaining map awareness and, the hardest part, good teamwork.