There is a bit of 'controversy' here.
Some people claims 'you don't make money with android appls' (*) , other say "no it's not true", other I heard say "you make more money with the ADS into the appl than the appl itself", other say things in the middle.
They are probably all true at the same time, depending on the circumstances.
I think it's also absolutely true that "nothing is so pirated like Android", I have some friends in Italy that swear that "name any application on Andorid, it's impossible NOT to find the pirated version of it and quite quick as well".
In fact one of the persons that said that I think he probably never bought one appl in all his life .. and he's full of appls of all kind ..
I think it's also true to an extent that on Android there's in places a mentality of "Don't buy it if you can avoid to buy it".
Funny thing some of that stuff said in that article ( especially the 99p thing ) say it somehwere else and you'd get lynched for saying that ..
I would not go to the extent to say that maybe you should look at Android like a place where "you spend money not to get money back but to make your appls get more notorious".
Hopefully there's some money to be made on Android, it's getting interesting to see 'how's going to be' with this Nexus story supposedly/admittedly sold "under cost" where "they are going to make the money up by selling applications for it".
I wonder how's going to be then if they are not going to sell anything

Did they think about it ?
Mah ... who knows .. fundamentally I can see 3 scenarious happening :
1. lot of work/time spent on it, totally poor return, total waste of time
2. lot of work/time spent on it, some return, not a total waste of time
3. lot of work/time spent on it, poor return, but something else ( more positive ) happens because of this
There could always be the 4 as well
4. lot of work/time spent on it, we hit the jackpot, we become millionaire
I'd be happy with 2 or 3, 4 is "the special super remote possibility" present in all those situations/places which is extremely unlikely to happen but has to be listed

We absolutely DO NOT work for 4 at any time but is in the list anyway.
What to say .. maybe things will get the point 2/3 work only for a very few people and we'll see "10 companies at most" doing Android SW and all the rest will be done by hobbysts/etc. that don't absolutely need money nor they ever tought for a second they would have done it thanks to Android.
Time will tell.
But yeah I can tell you "I am not going to become too crazy" because of Android, still it can be 'a curious experiment'.