There are just a ton of things to learn from this article. I'm not sure if I can cover them all but I'll try
> freelancing service with a fixed length, scope, and price
This negates a ton of the pains of freelancing. You wouldn't have to go through a ton of contract negotiating on price and work delivered because everything is fixed a clearly define. You shouldn't have to worry about going past the end date of the engagement since you're offering a productized consulting engagement which you're an expert at.
What if anything falls out beyond what's defined in the scope and end date? Just define a traditional MSA and SOW. The process should be a lot easier since you've already established trust with the client which is usually what 99% of contract agreements are all about (not a real statistic).
> Announce LPIAD like a product
This is what I found particularly fascinating. This service can be launched. And by launching you outreach to thousands of potential customers you couldn't reach before. That's the ultimate cold call!