I think that this is definitely the ideal move under different circumstances. But that wouldn't be a viable solution for Yahoo.

Currently, even at its 'dying' state, Yahoo has huge traffic from extremely loyal users who are mostly in the higher income (30+) age range. To dump that out the window would be an incredibly irresponsible business move. It's easy for a small, young company to pivot, but an old giant like Yahoo has to move slowly.

That being said, I think it would be a great move to really accept the growing age and therefore unique needs of this internet company rather than trying to follow new trends. That's truly their strongest leverage material at this point. Can they reinvent how the Internet is used by people over 40?