I just checked around, and according to Doesitplay?:
- over 1/3 (34%) of PS5 games on disc from their sampled games are either too buggy or missing required/advertised content without downloading something from a server before first play. 13-18% are unplayable without an initial download.
- 40% of games on Xbox One/Series X are too buggy/missing required or advertised content, and 10-11% are unplayable without an initial download.
Some of these games may even have hardcoded download requirements.
- over 1/3 (34%) of PS5 games on disc from their sampled games are either too buggy or missing required/advertised content without downloading something from a server before first play. 13-18% are unplayable without an initial download.
- 40% of games on Xbox One/Series X are too buggy/missing required or advertised content, and 10-11% are unplayable without an initial download.
Some of these games may even have hardcoded download requirements.
https://www.doesitplay.org/methodology