It's literally everything that people in relatively free markets buy.
Microsoft Windows is a great example that people will get really angry about, but like bubble gum also enriches the producer, seller and buyer.
It’s concerning that this was even a question!!!
Those are not great examples.
Bubble gum puts the buyer in a worse dental health situation.
Windows is a monopoly that controls the desktop market and the buyer would have been better off with a richer market with a variety of options.
You could have said cigarettes. They provide the same pleasure benefits as gum with unhealthy outcomes for the buyer.