Good post. I agree with much of what you say here.
In regards to profits, it is important, especially as these companies get larger and larger.
A company like Apple will not dedicate resource to a project or product if it doesn't think it will generate enough profit to matter. Product like the mythical iPhoneSE2 would likely make a profit, however, the market is likely to be so small as to not warrant any attention from Apple, much to the dismay of consumers that want a smaller iPhone.
If a product or service does not project to make acceptable profits, Apple won't do it. Unless there are other strategic reasons other than profit that fall into the win column for a particular product.
Look at the MacPro (and the Mac in general) and Pro software. Too small of a market for Apple to care about, so they're letting it whither on the vine.
Switching topics. About marketshare. I agree, it's important, but mostly in the context of growing (or at least maintaining) an active user base. While not a good sign, a shrinking market share isn't necessarily a big deal ... as long as some of these reasons are true.
1. Folks that aren't buying iPhones are just holding onto their current iPhones. This is neutral to the active user base.
2. iPhone unit sales are increasing, just not as much as the overall market. This would imply a growing user base ... also, it's now shown that iPhone sales have dropped this last quarter.
3. Folks are actively switching from Android to iPhone at the same rate that iPhone users are holding off on upgrading. This would be neutral for increasing market share, but positive for growing the base.
One last point. Market share is very fickle because it's generally measured on a quarter-by-quarter basis. Sometimes, it's measured on a month-to-month basis. So a drop in market share this quarter can easily be offset by a growth in market share the following quarter. Active user base takes much longer to affect.
Don't disagree with anything you've said
there's no real "rule" regarding these metrics and numbers. Thats why we have analysts whose job is to read and comprehend and analyse these things to take them into overall context of the market.
And overall, right now, a single quarter a trend doesn't make. Just us armchair analysts looking at the numbers, trends, histories and history of other companies who have been in similar scenarios to try and predict where the trends may be directed.
Every CEO needs to be able to balance all of the above. the biggest myth that the 21st century has perpetuated in our culture is that the CEO's job is to do nothing but maximize profit no matter what. I contend that doing so is a losing game for long term growth and stability as constant pumping up of margins can only go so far on the pricing side (as supply demand elasticity and market dictates the range of prices acceptable). So when you run out of pricing as a lever, you're forced to reduce costs to maintain the "maximization of profits above all else". Historically throughout the free market, there's a history of companies who have traded short term profit at the expense of market share for massive short term returns. Typically, the end result is that the companies cutting of costs ends up burning through good will of the user base and the market share declines are a potential indicator of that. Especially in a market that is not growing.
So I contend that a CEO's job is NOT to maximize profit. That's the CFO's job to recommend the course of actions required to maximize profit. It's the CEO's job to weight that recommendation and steer the company appropriately taking into consideration not only the CFO's maximization recommendations, but every other C level executives directives on how to maintain long term business strategy.