Apple is making record profits ($35 billion last quarter) and only 14.2% of those profits ($1.287 billion) came from sales of Mac hardware last quarter (all desktops and laptops). (
source) The percentage of money Apple makes from desktops and laptops is getting progressively smaller each quarter. And the number of 'professionals' in those numbers is smaller still.
The bottom line is that there is FAR more money to be made from consumers. To the point that professionals really don't matter to Apple's bottom line at all. Consumers, consumers, consumers. Consumers consuming music/video ($1.571 billion, up 29 percent from $1.571 billion a year earlier.) and apps ($891 million, up 28 percent from $696 million a year earlier.) on their iPads ($9.17 billion, up 52 percent from $6.046 billion a year earlier.), iPod Touches ($1.06 billion, down 20 percent from $1.325 billion a year earlier.) and iPhones ($16.425 billion, up 22 percent from $13.31 billion a year earlier.). That's where the money is. That's where nearly ALL the money is.
Microsoft is seeing the same light. That's why Windows 8 is what it is. It is a 100% consumer operating system, corporations be damned. It's about setting up an ecosystem of apps, music and video across your desktop, laptop, tablet and phone.
So, no, it doesn't matter if you can't install Eclipse, Mac Ports or various command-line tools on your Mac. The Mac App Store is about consumers, just like the iOS App Store. Not creators or 'professionals'. Even if you estimate that 10% of Mac's desktop/laptop hardware sales were 'professionals' (an extremely high estimate) and every single one of them abandoned Mac as a result of these changes (unlikely), that's still only $493 million. 1.4% of Apple's revenue. And that will be more than offset by another platform where Apple for all intents and purposes controls the keys to the kingdom (Mac App Store will be 95%+ of all Mac software sales in the next couple years) and makes a 30% cut of all software sales. They can ditch professionals and make a killing on consumers.