Actually, Riot wants permabanned people to come back and reform not get rid of them entirely. If they did they would earn less money and less people would play them and as far as I know, big companies need a big player base. So reformed players they want.
The issue is, Riot has stated before that they genuinely don't want players to come back after a permanent ban. Here's an example from Riot Tantram:
Actually, unsportsmanlike people kill the game. By removing them from the game it becomes more enjoyable, which increases player retention.
Besides - Riot already has a big playerbase. A millions-strong playerbase. They absolutely do not care to lose a handful of toxic players, since they have millions of other players who would gladly pay more than what the banned players would cover.
But it does have to be said that Riot does want reformed players - since, having non-toxic players helps keep other players in the game - but the opportunities to reform are before the Permanent ban, not after.
When Riot issues a permanent ban, the player has either suffered a 14-day ban from an especially egregious offense, or they've gone through the three punishments before it on the punishment ladder, and since they've broken the rules (likely) for the fourth time, ignoring several warnings and even a forced break with the threat of permanent suspension...
Well, the odds of that player actually reforming are slim. Why let them keep playing if they're not gonna play by the rules?
Also, I'm going to pick at your response to Kei143.
I've talked with Rioters and they want the toxic players to come back and reform. Don't talk that bs as if you've done your research kiddo. Don't just repeat what someone else said without proper knowledge.
You've talked with Rioters, but you don't provide any evidence of those chats? Typically, when you make a claim, you have to provide evidence, or nobody's going to be inclined to believe what you say. And since Rioters have mentioned a couple times on the Boards that they don't want permabanned players coming back (with one example shown above), I'm pretty sure most boards regulars have full reason to not believe you.
Also worth note;
Don't talk that bs as if you've done your research kiddo.
Don't talk down to people. It really hurts the likelihood anyone will believe you even further.
Don't just repeat what someone else said without proper knowledge.
Define "proper knowledge"? Kei143 and I both browse the PB boards regularly, and we've seen plenty of statements from Rioters that go against what you're trying to claim. Them saying the same thing as I did (that Riot doesn't want permabanned players to come back to buy more shit) isn't a case of them repeating what I said - we're both just raising counterarguments from a similar base of knowledge.