I enjoyed watching someone else play a Katamari game that ended with rolling around the planet picking up monuments. That was fun.
Later, I bought Katamari Damacy, and it doesn't have that aspect. You can't suck up everything on the planet. You can get moderately bigger and pick up objects the size of a car instead of objects the size of a paper clip.
What you're describing just isn't a strength of the original game; it was a strength of the sequels.
What you mean is you only played the first level. The game gets bigger with each level
What? I just played Katamari Damacy (Reroll, which afaik is an HD remaster but no new content) and the last levels absolutely have you rolling up things at planet scale
In the original, the last zoom out in the final level was after 0.8 km, and you could roll up clouds (one of which comes with a god), tornados, rainbows, and eventually the landmass the game takes place on so it's just ocean.