Verified main accounts - why are we not funding this?

How come we cant verify our main account with our phonenumber (or even passport LOL) so that we only play versus other players on their verified accounts?? This would fix so many issues with people flaming, leaving and trolling - cause if u lose this account, you are doomed to either change phone-number or play in the "trolling-department" of ranked.. with all the other players without a verified account. i cant really see why this is not a thing? it have done miracles for Steam and CS:GO with their PRIME ACCOUNTS... but i guess Riot would lose money doing this? If that is the case, then it is out of the question, i know! Just make it happen Riot, i am tired of leavers and bought accounts.
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