Maybe its a staple part of a game that you paid for; but I can't validate (and I'm assuming Riot can't either) creating a system that already exists for a game (regardless how much money they make) that is free to play. They have better things to do with their time than make something that already exists. Also, its worth pointing out that that just because something is a staple, that doesn't make it the best or healthiest idea.
Take curse voice for example: I don't have to give any personal information and I could create an environment where I can talk to all my teammates. Once I hang up, I will never hear from them again because they don't have a way to contact me anymore.
There is no reason to force the chat system on anyone, and that is what this would be doing. The way I see it, there are only 3 possible outcomes from Riot implementing a chat system:
- Not enough players have mics, so they can't actively communicate, drastically decreasing the effectiveness (aka not really enough of a game changing experience to make the process worth it).
- Players are unwilling (or uncomfortable, or unable) to talk to one another and simply get in the habit of muting all teammates (a common practice even now, without voice chat).
- Or neither one of these is a problem, which likely means the players have no problem with, and likely already, use an existing voice chat system.
If you want to talk about majorities, how can you say for sure that the majority of people aren't already using chat systems? Or more importantly, can you actually say that the majority of people that would use a chat system aren't already using a one?
So in addition to this being a questionable decision concerning who exactly it's going to affect and how its going to improve the game, we need to talk about how Riot will now be held responsible for player to player interactions on said voice chat. They are already responsible for policing and managing the things we type to eachother; how exactly would Riot enforce the summoners code in their new chat system? I don't think they can; which funnels right back into everyone getting muted and Riot simply wasting their time. And all of these problems for them creating something that we already have access to.