Over the years, I've watched all kinds of novels, anime, and American TV shows

I understand why they all start strong and then decline
A story's beginning must be captivating
Because only when it becomes popular can there be significant investment
So the setting must be exciting, and the story must be impressive
Otherwise, the production budget can't even sustain itself
Most of these things are just the writers having a flash of inspiration
Only a very small number understand the full ending
Or start with a very exciting conclusion
Commercialized serialization, industrial flow, capital seeking profits
Novel platforms charge by chapter subscriptions, tips, and paid content
Anime with high popularity are forced into endless serialization
The first season of a TV show must be a hit to get renewed
For the sake of money, they are forced to fill in plot holes and continue with sequels
Then the original creators and writers become completely exhausted
Only those who don't do it for money but to leave a mark in history
Finally produce the most complete, blood, sweat, and tears masterpiece
Most are forced into a bad ending by the commercial model