How to access full font families?

Ironically, Adobe itself doesn't license any “Bodoni 72” font family.

“Bodoni 72” is generally available as ITC Bodoni Seventy-Two™ and can be licensed from ITC Bodoni Seventy-Two™ - Webfont & Desktop font « MyFonts.

Yes, there are limited weights and styles for this particular font family, but it should be noted that as can be surmised by the font family name that includes “72,” this particular set of typefaces was specifically designed for use in large headlines and headers (as in 72pt) where the assumption was made that there was much less of a need for more weight and style variants. ITC also produced ITC Bodoni Six (as in 6pt text) for captions and footnotes as well as ITC Bodoni Twelve (as in 12pt text) for more conventional text typesetting.

These other ITC Bodoni families may be licensed at the same site or through other vendors. Adobe itself doesn't license any of the ITC Bodoni typefaces.

If you still feel limited, you might explore the offering of other Bodoni families (i.e., not the ITC offering).  You should also be aware that in the case of many of these older typeface families, the digital offerings in terms of styles and weights directly reflected those styles and weights that were actually available as metal type.

            - Dov