Your ticket is in the queue as is everyone elses. Your account would've been recovered much sooner if you had originally created the account and put any meaningful effort into your first response. You don't need to get everything right - the bar for how much your answers have to be exact or just close or not important at all varies based on the internal data they have that either does or not suggest a bought, shared, traded, etc. account. If there's no data to suggest you've ever shared the account, and that you didn't buy or get it from someone else, then they require very little original information to recover it, and it can just be kinda close (ex: you get the 2-6th first skins or whatever).
For 1, because it is a third party making money. Riot does not sell accounts. Riot does not get the money. Others are encouraged to "bot" accounts to level 30 because that's the only way they can viably make money. That means there's bots in League. And no, Riot is not going to offer people differing experiences just because they pay money.
For 2, you say it yourself - they buy accounts. Obviously they aren't going to be streaming when their account is banned, or if they see it they'll quickly cut it off and claim technical difficulties then come right back on a slightly different name account that they have on standby (and probably also bought). But actually, there are many streamers who do maintain more than one primary account - and play on all of them - and created all of them. You may think they buy accounts, but obviously they don't admit to it, nor do they let you see they get banned (in many cases). There are quite a few streamers who don't give a fuck about people knowing and will have multiple of their accounts be banned live on their streams, even if you haven't seen them personally.