Is this sarcasm, or a legitimate opinion of yours?
Games end up with mega empty worlds and repetitive, grindy content because of some misguided "dollar per hour" reasoning like this.
I encourage all to rethink the importance of quality in their gaming experiences. You can only play so many games in your life. Make sure you aren't squeezing the last unenjoyable drop from something just because it's there.
Can you recommend me a handful of games that have over 100 hours of real quality?