So what you're saying is that many asset values are purely fictional and don't correspond to a real value that anyone would pay. But, you think this is a good thing and that the government would ruin things if it foced asset values to be closer to what someone would actually pay for them.

I don't think your argument is as strong as you think it is. The value of an asset in a market economy is supposed to be what someone would pay for it. If you can't sell your Tesla stock for it's value, then it doesn't actually have that value.