> paying more than a fair price by deceptive business practices

I see product X is $10/month. I subscribe. I'm not sure where the deception is there? The alternative is likely either the cost of the product is exorbitantly high like $500 for lifetime. Or the developer makes it more affordable but sales peter out and they end up having to go out of business and can't afford to maintain the product after a couple of years. Likely both. And hackernews will complain either way.

The only sustainable model I've seen is lifetime licenses but updates for a single year.