>>712578340I think it is mainly because SEGA was willingly to stick to its mascot, as it was its videogame face, and thus kept making games about him, unlike Sony which saw Crash as a supernumerary franchise and eventually choose to cut their losses.
Honestly there is a lot of parallels between the 2, with both starting as technically competent but ultimately derivative games centered around a design by committee protagonist that couldn't handle the changes in console generation and kept producing increasingly worse games as a result.