Pepsi did steal money from them. They bought that Pepsi thinking they were getting a functioning lottery ticket. (Which is a hell of a scam anyway). But they got faulty lotto tickets due to Pepsi’s “mistake” at best and fraud at worst.
When bet makers don’t pay off their odds, it never end well for the squelched, which in this case is Pepsi.
Yes it’s ridiculous to riot over a failed Pepsi lotto. Their mistake was drinking that Pepsi (cough koolaid!) in the first place. Pepsi did what every multinational corporation does, cleverly manipulated people into doing exactly what they want even though it’s not good for them. None of those people need Pepsi. They probably need clean drinking water.