IBM got to where it is today by being complacent and not keeping up with innovation. Google is notably at the forefront of innovation, in a driving seat, and that innovation directly stands to benefit one of their core businesses in a way that the market is probably only just beginning to understand. It's an entirely different situation, imo.
A technology company that's profitably doing over $50 billion in sales after more than 100 years with no obvious signs of impending doom sounds like an okay position to me, even if the tables have turned since 1984[1].
[1] https://www.youtube.com/watch?v=VtvjbmoDx-I