Do I think side-loading and alt app stores would make iPads and iPhones more versatile devices? Yes. Do I believe indie devs will be worse off? Unfortunately, also yes. If you are a solo app developer, you will now have to keep presence on all app stores out there, since if you don’t publish on one then a copycat will. Every store would have its own review processes, fee structures, billing and tax procedures. Since…
There's a high number of indie devs which just gave up with the cumbersome appstore process. The ones you see on the appstore are the ones who made past this filter already.
I personally advise single devs against making an app unless you are really sure to have the motivation to go through all all of this.
The mobile stores are particularly bad and unsuited for hobbyists or single devs at the moment.
Just compare that to a website where you deploy and you are done.