Most of the Yeshivos that were built here prior to the 1970's were built an maintained on non-Orthodox money. Alas, the non-Orthodox Jewish community is rapidly assimilating, which will reduce the income base for our institutions, and those who do not assimilate are beginning to develop a hatred toward Orthodox Jews and Judaism, for reasons that should be the subject of some other posting. As a result of the above, a good deal of the funding obtained in the past will be lost to the future. As time goes on, the Orthodox community will have to become self-sufficient in order to survive. On the other hand, as a whole, the family size in Orthodox homes has risen in the past generation.
Disposable income is the stuff that is needed for educational institutions.
With income from non-Orthodox sources likely to dissipate over the next few decades, and with per capita income decreasing or even remaining at present levels, we can anticipate a severe financial crunch in the upcoming years that will crush our institutions. In my opinion, the the community as a whole must alter its own financial objectives and goals. In this, I mean business. There has been a fair amount of research done on this question, and the results don't seem to be supportive of the W-S hypothesis. The one study that I remember had to do with the classification of objects in terms of shape vs. color.