I totally agree with you. I don't mind paying for creative devs to build awesome software. I do mind cash grabs. Mobile gaming is the most frustrating category. It's sad that pay-once-no-ads games like Crashlands and 80 Days are the exception. Enterprise software is a close second, but I'm not paying those bills out of my own pocket.
Most people don’t balk at paying fair prices for an app, but the definition has drifted so far that €7/month (€84/year) is described as “fair” for a simple timer, and that is plain absurd.
Halide goes for €69 one-time purchase, or €12,50/year. For professional software that is really well designed and is actually kept up to date. This should be the benchmark.