The price he charges v.s. the content he puts up is more than reasonable. I'm not sure if Hyao really intends to "milk" while drag out, or he just has no idea how to proceed with Main story anymore.
It feels like stranded too long that kinda lost direction. It's hard to even remember what's the main plots of LD anymore (me included

Game development is hard, especially if you don't hv the whole picture of your game.
Finishing the "Main plots" then adding more stuff later would be ideal (Like Coming out on Top with bonus dates).
Tho it's not likely apply to LD at this point, unless something happens.