Ok, I had a nice discussion with @jasonrosewell in a PM just now.
Why a subscription is necessary:
First of all, whether the subscription is necessary or not doesn’t matter to me. I am still a happy customer of Infinite Flight and I am looking to purchase PRO again once it expires on my birthday. Get it? IF PRO will be my Birthday present :D XD I am happy to spend $80 for this as this is the best flight simulator on mobile.
Now, to answer your question, a pro subscription is necessary in order to allow the developers to continue to move forward. If you only paid $5 for the app itself, that money will soon run out for the developers.
You pay $5 one time, but the developers have to keep on paying to keep their satellite imagery updated, pay their staff, pay for Discourse (which is IFC itself), and pay for the app to remain on the App Store and Play Store. This basically means that soon, they will no longer be able to afford to pay all this and Infinite Flight as we know it would shut down! D:
A subscription ensures: the developers get a constant income of revenue to keep their updates going, the app is able to remain on the App and Play stores, IFC to remain alive, and the satellite imagery is to be up to date.
Regarding IAPs
If you are wondering why IAPs were removed altogether, as I did, the answer was simply that there was no point in keeping them alive. When that beautiful update called GLOBAL came out in October 2017 and PRO came out, all airplanes were included in the PRO subscription. Since people wanted to fly globally and not get stuck in regions, they would end up getting a PRO subscription. That means there is basically no point in keeping IAPs as everyone is purchasing PRO instead. It’s basically like a nightmare for the developers as they are keeping something alive that absolutely has no point of being alive.
Everyone has PRO. They have all planes. Those that don’t have PRO might not play IF at all since they would rather enjoy global than getting stuck in regions. That was before. Today, NO ONE would want to get stuck in a region.
I would like to thank @jasonrosewell for clearing that up as it has been a curiosity of mine for a long time since the 18.2 update. I am a happy customer for IF and will be for at least another year.
TL;DR
No subscription = No Infinite Flight
Have any questions?
Reply to me below.