If I were a profitable company and I knew I could end bullying resulting from my product without significantly harming my business, and I chose not too, would I be acting ethically?

Apple could also end bullying by giving their phones away for free so every kid in high school could use iMessage. Is it acting ethically if they don't do that? Exactly how much of Apple's products and services should be made available to everyone, and where/how do you draw the line?

To be clear, I don't have a dog in this race. I have an iPhone but barely use iMessages.