[Ekaros]

Because coming up with something light that can resist heat(food tends to be hot), moist or straight up water and fats and oils is hard. Plate or heavy container isn't that hard. But something that can be transported or even used to store stuff fore even couple days or weeks is quite hard task.

[zamfi]

It’s not hard, it’s just inconvenient and more time-intensive.

For example, tiffin carriers, or dabbas, have existed for a very long time, but require frequent cleaning, and take up more space.

When we decided that disposable packaging was an acceptable level of waste to incur, we set ourselves on a path to its ubiquity.