Not so much...
The article talks about it a little differently.
Suppose however I posted a page right now with my XYZ offer and had a text (or graphic) Order link.
You click through.
The click takes you to "sorry, we are currently out of stock" or "sorry, not yet available" or "sorry, creating a new batch" (or whatever). But for your pateience here's a digital freebie and by the way, register for our early notification list.
You haven't spent any money with me AND I didn't force you to become a lead under a false pretense. FCC has nothing to do with this.
If you decide to optin for when the product launches... that's your choice. And certainly I didn't charge you anything.
Point is, that setup, you could run with all sorts of products and test the conversion (from visit to order button click, obviously, since you can't actually measure "purchases"). That won't be 100% accurate as some do abandon the cart, but it's definitely close enough to indicate whether the product is worth launching.
Now, consider this...
What if you also toss in an exit pop ... as they are about to exit, you have a little survey/poll asking what else they'd like to see in your XYZ offer or what they would change (ie: now you've got your market not only telling you whether they'd be willing to buy but what they'd change). And put THAT on your so-called order page.
Of course, you should also put one on the actual sales page .
I use:
http://www.27am.com/oh
I used to have my own exit window software in Buy Now Wizard, I've sold that business ... but that script works great. Or find another (or create your own). Or use SurveyMonkey though I still recommend do it in an exit window.
Regardless, THAT process works great... you essentially find out if the person would be willing to buy just from a make-shift, draft salesletter (and if they'd be willing to buy as a cold-lead, with no pre-sell, from a basic salesletter.. than obviously your conversions will be a LOT higher from a top notch salesletter, well monetized sales funnel, with presell teasers in the mix) ... if they aren't clicking the order button, they can help tell you why they aren't buying (which tells you how to edit/modify the product) and if they DID click the order button and were "ready to order", you can generate an early notification leads list AND find out what else they'd like to see with the product.
All this for a few hundred dollars of PPC and some basic buzz promotions ... vs $10k+ on a salesletter, $500+ on graphics, countless hours on R&D, etc, etc.