Well, if as Nintendo does we also count the bundled copies for the heavily bundled games (like NES SMB, GB Tetris, Wii Sports etc.), the previous Astro title (Astro's Playroom) sold 60M+ units.
Absolutely nothing leads to think that all Sony content will go this route.
Out of what we know, only Astro Bot and Lego Horizon (and maybe one of the Bungie unannounced projects) have the "all ages" approach, not the case of the other more than two dozen games that Sony has under development or recently released.
Sony obviously won't stop making their other more adult focused type of games to focus on "all ages" instead. They simply are growing the type of games they cover with 1st party, now also covering again the "all ages" stuff they already covered in the PS1-PS3 gens, on top of the traditional type of games they normally cover.