Just look at the number of people in these comments complaining that Apple axed the 17" MBP. While I agree that there may be a use case and a segment of the population that could make use of a 17" laptop, they obviously didn't sell enough of them to make it worthwhile. The response to this is usually "well, they just lost me as a customer completely now" as if that's supposed to sway Apple into saying "You're right! We should keep building and sourcing components for a computer that less and less people are using". I'm sure Apple loses some money and some customers from the lack of a 17" laptop, but that obviously doesn't outweigh the number of people that are willing to switch to another one of their computers.
Vote with your wallets. Look at what the computers can do and buy them if they work for you. If not, go somewhere else and buy a competing product. If enough people do that, companies like Apple will notice. If not enough people do it, then you're in a small demographic that it doesn't make sense to cater for. Yes, they may lose a long time "loyalist", but it doesn't really make sense for people to be loyal to a specific product. You can be loyal to a company that continues to make products that you find value in, but to base your livelihood and your loyalty on a product seems misguided.