I agree with Yitay. I have had contact with some professionals over the years. In the 1980 and 1990s there were only 2 people that made a profit on an album (without sponsorships); MBD and AF. That hasn’t changed much. Maybe Dedi in the short window when he was at his peak. And LIPA. Other Werdygers, (Mendy, Yeedle, and more recently Yisroel) perhaps on the family name. Dachs? Maybe but not likely. Williger and Wald? Fugetaboutit! It always was only to get the name recognition for appearance fees at concerts, weddings and the like.
There are other reasons that MBD is no longer producing albums. At the top of that list would be age. He was mehaneh klal Yisroel like none other for decades, but it is difficult to keep up the standard now that he is in his 60s. (Although Chazan Dovid Werdyger was still near the top of his game at age 75-80.)
I wouldn’t complain about overload. The really good ones don’t come out that often. And the ones the OP as complaining about are mostly ignorable. (Is there such a word?)