The economics angle has not yet been disscussed, which is why the letter is worthwhile.
The issue is not more learners, C’V. May we have such problems in Klal Yisroel!
The problem is becoming similar to that at the time of the second Beis Hamikdosh, i.e. the Pharasees vs. everyone else.
We know where that ended, the destruction of the Beis HaMikdash.
The Chiddush of the letter is that having a job is also a “job” needed in Klal Yisroel. It should not be dismissed as “not being important” or unworthy.
After all, don’t Chazal say “al Shlosha dvorim Haolam omed, Kesef, Mammon & Gelt”? 😉