imagine it'll be a bit more complicated than that and assume to realize a value worth cashing out you'd have to be on the site all day.
you're also not taking into account that if it doesn't already break the ToS of the platform they use it on (WP, YT, wherever) they will update it immediately if it gets popular.
companies like that don't want the liability. There isn't a kickback big enough for them to allow it.
Not sure what you mean with the ToS. If a site implemented SMT, why would they change the ToS to not allow it?
I can see a lot of companies not wanting to deal with liability issues, but then again there may be sites in countries other than the US where it's not really a problem.
Good to see some criticism of the SMT concept, you may be right. But I hope you're wrong.