Almost everyone does that and it does not cost them a single cent.
They spent money commissioning a video celebrating gay pride.
They spent money on lawyers to petition the Californian government on Prop 8.
They donated $100K to the No to 8 campaign.
Their supplier responsibility reports have been auditing their suppliers for discrimination for years.
It is just public relations.
Again, like the other guy I responded to, you're setting up a no win situation. They don't support gay rights? They are unethical. They do support gay rights? It's just marketing.
Their CEO is widely believed to be gay and I'm sure a hell of a lot of their employees are gay as well. You're asking me to believe they aren't doing this out of principle at all? That's not the most plausible explanation here.
Enforcing worker rights in their contracts abroad.
Again, this is mainly a PR thing. People got upset (for the wrong reasons -- Apple's contract manufacturers may be bad employers by European or even American standards, but people in China appear to be happy to work for them) and Apple had to repair damage.
Nope, they actually started internal audits of their supply chain and generating public reports several years before all that happened. You can go and download them on their website and see for yourself.
Making their products environmentally friendly.
When will they be doing that?
They've been doing that for many years. Here's the info, specifically the products. Even Greenpeace are singing their praises, specifically, saying: Apple has put its money where its mouth is: Greenpeace's report, "Clicking Clean," found that the company's embrace of renewable energy is genuine, and is leading the technology sector.
Their entire product portfolio is based on planned obsolescence. They may be very proud of how much material they are saving by making critical parts as flimsy as possible, but in reality the reduced lifespan hurts the environment more than the minor savings help it.
This is just FUD. Apple hardware lasts a lot longer than the equivalent from their competitors. I've lost count of the number of laptops, PCs, and non-Apple smartphones I've seen people around me churn through while Apple users with the same needs just buy once or twice in the same time period.
Improving the privacy of their users
By storing all their personal data in a country that has effectively declared war on privacy? By secretly tracking their customers? Apple is doing the exact opposite of what you claim.
By forbidding abusive behaviour in the App Store. By removing application access to identifying information several times. By providing an alternative to third party analytics like Google Analytics that isn't driven by a market need to sell that data. By encrypting a whole bunch of things they aren't compelled to.
Apple has done many unethical things in recent years.
I won't argue with that. What I will argue with is somebody who says that their ethics are non-existent. They perform positive ethical acts on a regular basis. They clearly have ethics, even if they fail to live up to the standard you demand of them.