I am trying to work out the level of (useless?/unnecessary?) churn in the world of startups / digital transformation / world. So, yes the Internet is great - i

I am trying to work out the level of (useless?/unnecessary?) churn in the world of startups / digital transformation / world. So, yes the Internet is great - it connects what 5 billion adults now, and allows faster finding of the things you want etc. But there is soooo much ... of this stuff. I am guessing that "Digital marketing for the Rental market" means you have a house to let, and you want to list it with these people and their five competitors because you might miss out because who knows where one's audience really looks. Now we could talk about disaggregation of AiBnB as a positive thing, but really - no, lets not. What we can talk about is there is a bare minimum of cost / effort we can imagine here. Call it a Craigslist for the whole internet. Want to sell something - just find the right RDF tuple and list it. A search engine can find it and anyone searching for "house to rent in London" or "new pair trainers" will have a complete JSON list to walk through - sortable by price, location, availability etc etc. Now this is not something I think should exist, but if it did it would still have a cost to operate. But we could measure the unnecessary churn by comparing the actual cost (in people, dollars, time etc) of things like RentPath to this bare minimum. I expect there are Economics PhDs on this, but it struck me as interesting.