Some clarification about that, though: That list only covers albums that have been certified for sales by the RIAA. Record companies don't have to submit albums for certification; in fact they pay for the service.The list, which covers the 100 best-selling albums, stops there...at five times platinum..or five million copies sold. None of the TJB or Alpert solo LPs hit that level. In fact, according to the RIAA database, the only Alpert LP to go Platinum rather than Gold, is Rise.
The "platinum" certification had not even been invented during the TJB era; that didn't happen until 1976, some 8 years after the heyday of the TJB. I think an argument could be made that at least three or four of the TJB albums sold over 5 million copies...WHAT NOW MY LOVE, in particular, had orders of more than a million copies before if was even released.
RISE was simply Herb's first album after the Platinum award's inception to sell more than a million copies. If A&M had wanted to, they could have had the earlier TJB albums certified for their sales, but they never chose to do it.