I call shenanigans^
The costs to produce and release a PDF is less than the cost of producing a large volume of physical copies.
We went through this when the PDF debate was fresh. Apparently, people have forgotten.
Here are costs associated with selling PDFs:
1) Time to upload PDFs at Seller Site
2) Time to monitor sales at Seller Site
3) Time to Account for sales in accounting
4) Time to answer customer service questions for listed items
5) Time to post some sort of marketing within the general WOTC marketing scheme for all items sold
6) Time to document the project in internal company reports for internal reporting and cost accounting measures
7) Time to monitor pirating sites to see if they are offering your PDF scans
8) Time to enforce copyright policy on those sites (if you do not enforce on products you are selling, you can damage your intellectual property rights).
9) Time to report copyright results in internal company reports
10) Time to scan additional content (they had not scanned all of it)
11) Time to pay for the portion of overhead costs associated with all of the above tasks
There are other costs, but those are just a few off the top of my head. It's not just "Offer them and then count your dollar bills". There are in fact costs associated with the sales of those older PDFs. And I promise you, if those PDF sales were worth $100K to them in profits, they would continue to do it regardless of any piracy issues. It's a company - they do things which are profitable. They didn't just end a profitable line purely for piracy issues - there was also the fact they were a very small, niche item not bringing in much money relative to the cost (and opportunity cost) of doing it.
I could go on, but most of what you are saying is ludicrous. There are really only two rational explanations. Either WotC got rid of PDFs because they didn't want their newest edition to compete with the draw of previous editions/material, or the decision was simple incompetence.
I think it's a little bit of column A, and a little bit of column B.
How about C, you've never run a company anywhere near the size of WOTC and do not fully know the costs associated with undertaking such an endeavor and have under-counted the costs of it and think it's just a lot easier than it really is (like most things in business).
I don't mean that personally...I am responding to you saying anyone who disagrees with you on this is ludicrous. It's not ludicrous. There are real costs, and I think it is quite safe to say it just wasn't particularly profitable and a hassle relative to the benefits they gained from it.
As for "old players vs new". It's a false distinction. Old players draw in new players simply by deign of participation in the game.
Old players who won't spend a dime on WOTC products because they don't offer PDFs of older-edition games are not going to draw new players in to
new products. They might draw a few (not many) new players into old products, but as I said above those are not particularly profitable. A new customer drawn in through an email about a new product is likely to be much more profitable.