Only effect while the token economy is active and no effect once stopped: in this case the token economy is functioning as a prosthesis (like a wheelchair); it does not permanently help the patient once terminated but is necessary to maintain normal functioning;
Consider this. How many people pay for cure and get a prosthetics? Almost all tragedy tells this story.
Tokens have no intrinsic value, but can be exchanged for other valued reinforcing events: back-up reinforcers, which act as rewards.
My first thought was crypto currency, but this maps to likes and followers, even money itself. Followers and likes are interesting because they are not single use. £40,000 will get you a nice car, once. But 40,000 followers can get you a brand deal multiple times over. How interesting is that? I guess the trade of is that not everyones followers are equal (some demographics are in more demand than others)
Rewarding behavior could increase the extrinsic motivation and at the same time decrease the intrinsic motivation for activities.
Think about social media. No wonder sales teams have to constantly be roused up and consume drugs. When the ratio of extrinsic to intrinsic motivation skews too far to the former you end up unfulfilled and materialistic. You can't find the motivation so you set up a "system" of rewards to help you muster up the strength to do basic things - and then, of course, you fail. How else to deal with the discomfort of failure but with more distracting externals.
But what of motivators like sex and outrage, are those not internal motivators? I suppose they are roused up by externals.