Sony and headphones together with tape player ... there's a synergy there, when they can sell them together, it's a small one though. (Selling two pieces of hardware together generates more turnover with one transaction.)

With Android requiring Google to be the default search ... in comparison to the headphones there's a huge synergy here, I'd say. Collecting data (via non search software on the Android phone) and adding to it more data from search, makes all data more valuable in a very non-linear way. With the tape player I'd say it's more linear.

So for me, the search data is a quite obvious non-neutrality issue.