bronze 5 flaws

I getting general impression won games produce 15-18 lp and lost games 22-25, if everyone followed this law then everyone would be at bronze because lets say i win 60-40 to try to climb out of bronze then 16.5*.6 - 23.5 * .4 = 9.9 - 9.4 0.5 still not enough to climb out of bronze, and the other guy 16.5 * .4 - 23.5 * .6 = 6.6 - 14.1 = is losing at 7.6, this is feeding on bronze 5 players because in order for players to get to challenger tier and above someone has to pay the price which is bronze 5 players losing alot that's why league is dying because of few top and many bottom and bottom has to pay the price and majority of players are at the bottom. bronze 5 players can not lose any more points when at the bottom which top players feed upon bottom and riot does not want to open up new tiers because it might offend top players who are paying. so lets say you win 0.5 points per game still not enough to open new tier.