I agree 100%. In business, you have to prove your innocence when subject to a lawsuit. Same goes for lying imo.
If you ran out of money to keep your promise, you will be able to prove that. Same goes for having to compromise to get some other benefit.
The initial point I was trying to make is that we are so accustomed (imo) to being lied to that we don’t make people prove that they didn’t plan that from the beginning.
For example: where I live, it is common practice to make food pictures for ads or menus that a) dont resemble the final product and b) are made with completely different, often inedible substances to look like a better version of the real deal. Something that an hones picture can never achieve. This needs to be illegal. This is not someone running out of money or compromising but premeditated lying.