These are gambling tactics you'd see in a casino, only you're paying $60 to have access to it and it's marketed to children. There's no regulation here and it's targeting addicts and children through a lot of manipulation.
I don't have a problem with these complaints or anyone's disgust with monetization-game imbalancing issues but I would point out that
many, many products have been marketed to children with this exact randomized loot system, down to 25 cent dispensers of random collectibles like "Homies" or sticker tattoos or...drum roll, please:
pokemon/
digimon/
yu-gi oh/
magic card packs
with random loot in every pack, not to mention higher-end collectible card pack versions with a 'greater chance of better loot'...
Randomized rewards are even embedded in board game structure "draw a card from the pile and see what you won" seen in Monopoly, clue, the game of Life, Old Maid,
even Scrabble letters
So as far as saying you don't like how capitalism is just now starting to offer kids random, inconstant rewards for continually playing or investing money in something, I would counter that these systems have been in place for years, and profited greatly from randomizing their product payouts.
Here's where you'd probably see some poster follow that up with "teach your kids financial responsibility before they spend every last dollar they own on pokemon card packs" but in Scotland we used to laugh at kids that didn't have self control, so there's always the humor-based reinforcement system as well. Let your kid overspend on 5 packs of candy and mock his face when he learns he did that to his own budget. You have options. Just don't blame randomized paid packs in video games for teaching your kid gambling habits when trading cards and grocery store quarter slots have been doing it for years, and anyone who lives in a capitalist sell-everything society does in fact, need to learn when to stop buying everything they could potentially buy
Your kid knows that any given chuck e cheese or dave and busters rewards fabulous, dazzling prizes for 15,000 tickets but they soon learn compromise in those "sky is the limit" paid-prize environments