As I pointed out on one of those threads, the decision of how to manage one's organisation and intellectual property is a difficult one. Non-profit organisations, such as the Pali Text Society, Buddhist Publication Society, and Wisdom Publications, have been around for a long
time. More than a century in the case of PTS. By careful management, and latterly by collaboration with Wisdom (Bhikkhu Bodhi's translations are also distributed by PTS) PTS has ensured that high-quality English translations of almost the entire Tipitika are available and accessible to all who wish to purchase them or have access to a good library. On-line resources such as Access to Insight are simply not in the same league either in quality or quantity.
Furthermore, the cost of the Wisdom Nikayas is actually rather small in comparison to the amount of use I've got out of them. I've spent hundreds of hours simply listening to Bhikkhu Bodhi's (free) lectures on the MN alone (while, of course, referring to the text).
While I applaud other methods of distribution, it is not clear to me that they would have sufficed to support such efforts as effectively over such a span of time. Research, translation, editing, and production are difficult and time-consuming. Moreover, keeping electronic resources safe is also not trivial. They have to updated in format every decade or so.
Ironically, publications that are produced for free are often more difficult to obtain than "commercial" volumes. More and more are available electronically, which does help, though, as noted above, it does not ensure lasting availability.
The Internet may well change the "business model" of the non-profits such as PTS, BPS, Wisdom, etc. BPS in particular has been starting to proved PDF's as well has hard copies (e.g. the Visuddhimagga), and perhaps others will follow. However, if I were running those organisations I would want to be careful not to lose what has been built over decades/centuries.