In 2030? Well, you play the game to get the feeling of happiness, that feeling is generated in your brain by increasing neurotransmitters like serotonin and dopamine in specific areas. In 2030, nano bots wi be there, which will produce and will keep you in euphoric state. Why will you rely on games to get the happiness when your brain gets more happiness simply by modifying neurotransmitters in your brain via nanobots?

It was a pessimistic take. In 2030, there will be brain computer interface, you will be able to transfer your memory to computer. So you will transcend yourself into computer leaving your human body. Why will you remain in a cage of biological mortal machine when you can simply get better robotic body? When you will leave your human body, there will be no biological brain, no neurotransmitters, no need to rely on gaming to stay happy, you just can be happy without this external things.

In simple words, Gaming will be irrelevant in 2030, just like all other things.