First they introduced me to structured and functional way of thinking about designing UI (with old MacOS X HIG). Practically gave start of my career with this.
And in the last several years in series of decisions they forced me to completely revision my view of what hardware and software I use for my personal and professional computing.
The power of industrial design is still with them (almost tempted me to fall again in the rabbit hole with the new MacBook Pro), happily for me they are run by marketing and never ending expansion, not by product people, and as a result regularly they produce utter crap - mouse with charging port under the body, faulty laptop keyboards, the thrash can, and now the notch. So I dodged "the bullet".:)
On a more different level of thought, we as consumers rarely take a moment to think about the implications of creating a monopolistic monsters and how this relates to our future as a professionals or individuals.
DMCA will never be reformed with balance in mind. More likely will be transformed towards version 2 with more power for the corporations.