> "...you need very little marketing... development time is quicker..."
I disagree with this. There's still quite a bit of effort involved marketing if you've not already got credibility/contacts/attention from something previous. Development time may be quicker in general but if you want to craft something unique I expect you still have to spend time on it.
I suppose development time does depend on the app. It is possible to spend a few hours building an app and make a lot of money from it though but this is probably the exception not the rule.
I've always found marketing iOS apps to be very simple. You get marketing in the App Store new releases section, and then I push hard for downloads on social media. You only need to market hard until you get into the top 25 or so and then the App Store does it for you. This is what I have found anyway.
I disagree with this. There's still quite a bit of effort involved marketing if you've not already got credibility/contacts/attention from something previous. Development time may be quicker in general but if you want to craft something unique I expect you still have to spend time on it.
Agree with the rest of your points though.