When the post -80s and post -90s grew into the mainstream consumer groups of Chinese society, which industries and products will shrink significantly?

Nowadays, social development is fast, and new things are constantly being launched, and with new things, then it is certain that old things are easily eliminated. When the post -80s and post -90s became the mainstream consumer group in China, I felt that there must be many industries and products that will shrink significantly.
The mainstream mainstream of consumption is almost the post -80s and post -90s, and our obvious industry is the development of mobile phones now! As a post -90s, I can talk about our own understanding. We now have high requirements for mobile phones. Everyone is seeking the latest mobile phone, so the update rate of mobile phones is very fast. The new model, the price of the old model can be said to be the biggest. The elderly machine may be slowly eliminated. Except for some unwilling to learn and the elderly, it can be said that there is no market for the elderly!

slowly as the mobile phone is updated, the function increases, and the previous popular newspapers read materials, and some of the information are not developed in places and units with underdeveloped information. It can be said that post -80s and I almost didn't read it after the 90s! The current mobile phone can be said to have too many functions, too smart! We do n’t even need to bring money when we go out, pay directly on WeChat, Alipay payment, etc.
It can be said that even the bank's mobile phone swiping machine is almost not much market! In the past, we did n’t bring money when we went out. As long as we brought the card, there were many places to swipe the bank card. Now that there is a mobile phone, everyone can not even bring a bank card. No matter what you eat and a taxi, you can pay it with your mobile phone.
In fact, with the development, many industries and products are shrinking, but many of them have not paid attention. Some have quietly launched the historical stage, and most of the post -80s and post -90s are the most. The crowd of new things, so they did not care about those.