No. And even if PS and their home electronics division died, Sony has their hands in too many pies for it to hurt them longterm as a company; they’re in the cine and ENG industries, they make still cams, they make image sensors for everyone, and last time I thought they also had an industrial imaging division, Sony as a company will be fine even if they lost PS and their home electronics division.
To put it bluntly, Sony is in the position now, that RCA was in when they were in their prime, only Sony has yet to have a CED moment where RCA killed themselves in their stupidity with the CED. And no, Betamax and MD don’t count as neither of those formats killed Sony as a company, the CED otoh, killed RCA as a company.