IOS apps are too cheap. Apple needs to help make app dev more sustainable

Question

First let me say that I am a user, not a dev (at least not an app dev).
According to
http://techcrunch.com/2013/07/18/paid-apps-on-the-decline-90-of-ios-apps-are-fre e-up-from-80-84-during-2010-2012-says-flurry/
90% of apps on app store are free. Avg price for iPad app is 50c, for iPhone app is 19c. The situation is even worse for android. Something ridiculous like 6c.
It's a wonder anyone is still in business. This doesn't seem sustainable, unless you have a hit or you target a professional/enthusiast niche, how do you make money.  There can't be that much money in ads. 
We have a race to the bottom and users have gotten used to the idea that everything should be free or nearly free.
I am guilty of this myself. I'll pick the free app with ads  if given a choice, and may upgrade if the ads get too annoying and i use the app often.
I'll usually pay one or two dollars without thinking much. Four or  five  dollars and i have to think a bit. above five I have to think hard.
There are a couple of things Apple can do to improve the situation for everyone.
1) create a built in trial system.  Have a Try it button. After the user has used ithe app X amt of time iOS will ask if they want to buy. Yes, their account is charged, no the app is deleted. The app dev can specify whether they want to allow the Try button and the amt of time they think would allow the avg user to adequately try the app.
When I first got my iPad, I downloaded a bunch of PDF readers; some free, some cost a few bucks.  I ended up buying about $20 worth of apps before getting the one I wanted.
A free trial system will hopefully encourage people to pay  prices they may otherwise balk at. If you have a good app, you have a better a chance at making a sale if your users can test it out first. The system is also upfront and honest. You don't download something for "free" and find it crippled IR nonfunctional until you make an IAP.
Of course once a trial system is in place, there'll be tremendous pressure on all devs to use it for all apps. This may not be a good thing.
2) upgrade pricing.
This is desperately needed.  I bought filebrowser way back when for 99c and since then it's been updated tremendously, but I haven't paid any more for it. Seems a bit unfair.
Devs are in the uncomfortable position of either giving a way a lot of effort for free if they stay with free updates, or alienate people who recently bought their app by creating a new version.
In addition, retain at least one major old version so people who are satisfied can stay with it, or downgrade if the new version breaks something or changes something they don't like.
All this adds complexity to the system. But hey, that's what good design skills are for, right?  Any average company can make simple stuff simple.

Answer 1

Don't tell us (we're users just like you).
Tell Apple at:  http://www.apple.com/feedback
But I personally think your ideas won't get anywhere.
The current system is working fine.
Your ideas add too much complexity.
Thousands of developers are making billions of dollars every year.
There is no problem.