Don't buy diamonds lose movie tickets

why would buying diamonds during 80% off sale lose chance to get movie tickets for items and free diamonds.....no one will ever buy diamonds if they never you stop getting those bonuses. I mean if they knew this (never get movie tickets ever again if you buy a dollar of diamonds they will never buy them right) it would lose revenue right so why do it?

note: i do see all the other posts but i see no solution, everyone on facebook and youtube should be made aware if this is a "feature"