Exatly, it's a business and this is the classic sign of a dominant business - one that, as sales fall, can put up prices to compensate and push customers towards more expensive models. Poor businesses are ones that can't do that.
This has happened many times over the last few years. Let's look at the iPad. The iPad was $499 every year from launch; even massive innovations such as the retina display (3rd gen), new screen technology to narrow the bezels (Air) and additional RAM and CPU core (Air 2) didn't put this price up. The the iPad sales started to drop (
https://www.statista.com/statistics/269915/global-apple-ipad-sales-since-q3-2010/) and the next model (iPad Pro 9.7") was launched at $599. Next up is the iPhone - in the UK the price of the iPhone went up only 20% between the 3GS and the iPhone 6s (£449 to £539) and since then has increased by 60% (the UK pound has lost 25% of its value against the US$ so accounting for that, the price has increased by 45%) - again look at the sales numbers (
https://dazeinfo.com/2018/08/24/apple-iphone-sales-worldwide-by-quarter-graphfarm/) and you can see the numbers start to stagnate around the iPhone 7 which is when the price increases started...
I am a stockholder (have been since around 2015) but I can see that this game can only run so long. There are plenty of Apple fanboys on this site who will snap up whatever Apple releases, but everyone has a limit. How many people would still buy an iPhone when the cheapest "latest" model goes above $999? How about $1299? Throw in a global economic slowdown and rising cost of living and Apple could have a big problem.
Raising prices and pushing people to higher tier models works to prop up / increase revenues and profit (and therefore make Wall Street happy) up to a point. But it is only sustainable for so long...