Good work! Just a few things I would like to add.

1. This post confirms the trend that had been going on, as litterally for any new OS update, on the twitter platform I noticed people complaining. They stated that their phones got significantly slower after upgrading their phones to the newest OS.

2. This phenomenon is not very surprising, as apple ethics have dramatically changed since Steve Jobs passed away. Tim Cook, the current apple CEO has been prioritizing sells, rather than quality. Look at the MacBook for instance. It has not drastically improved since 2012 in terms or design or even processor speed. I actually think that computer products such as LeNovo are now wayyyyy above apple computer product. This guy explains it pretty well, check this out: goo.gl/TUR1UQ

3. The majority of companies now do what apple does: produce more without really caring about improving the quality. They think that it is the best way to generate revenues in the long term. They think that since they have a really good reputation, they don't have to care no more about the quality of their products. But not all companies are like that. I personally think that companies such as Tesla, SpaceX or Solarus really bring quality to their product and are constantly prioritizing customer satisfaction.