OK does anyone have any idea why conventional "breakfast" food seems to so often come with absolutely no vegetables?

Update on this: I feel like this problem has decreased by ~50% since (my memory of) pre-covid, more and more breakfasts have vegetables, especially in East Asia. Still far from ideal though.

That’s why I cook my own food 2x a day and yes big plate of sautéed veg with protein is the best brekkie at midday for me.

Try roasted kale with salt pepper and olive oil drizzle - revelation!