Well the strategy is to create a market so that more product can be sold.
If that means convincing women with straight hair that they look better with curly hair, or women with curly hair that they look better with straight hair, and that they all will look better with hair of a different color then they are happy. All that racial, self-hate stuff you mentioned @Pioneer1, is incidental.
What has been an amazing trick getting women to justify all of these gyrations marketers have imposed upon them as somehow empowering. Whether it is the hair care products, the makeup, the completely dysfunctional high heal shoes, or any of the stuff women are forced to deal with, and the end of the day it is really about profit.
I have throw away more working TV's and computer monitors than I care to admit. We have all be placed on a hamster wheel of consumption.
The idea that Apple was deliberately making older phones slower comes as no surprise the users of technology, what is surprised is that people are still lining up to buy stuff from them. We all know this planned obsolescence is art of their business model. F#ck Apple.