On February 1, 2018, Hideki Sato gave an interview over several days at the Hitotsubashi University Innovation Research Center as part of an oral history on the video games industry in Japan. SEGA-16 & MD SHOCK later translated much of the Japanese transcripts into English, and many great insights have since come from these interviews with Sato-san. If you would like to check out the original Japanese transcripts, here is a link to them below:

Huge thanks to SEGA-16 & MD SHOCK for making this information accessible to English speaking audiences!

MD SHOCK: https://mdshock.com/2020/06/16/hideki-sato-discussing-the-sega-saturn

SEGA-16: https://www.sega-16.com/forum/showthread.php?33506-Hideki-Sato-on-the-Sega-Saturn-(incredible-new-interview)