Be cool if Victory comes back but Yamaha is more complicated IMO.
HD, Indian and Victory had the advantage of sharing motors and powertrains. Yamaha was all over the place so much more R&D plus more costs to keep inventory stocks. We had 3-4 bikes sharing a motor at the high point I believe and that is simply harder.
Plus Yamaha already has the diversification that HD has tried to obtain for years. Granted they totally shunned those of us in the cruiser segment recently but I bet their sales numbers support that choice. Love the new MT09 or not, Mother Yamaha spent a fair amount of time redoing that bike. Personally I rode the previous one and really liked it...
I think the reality is that Yamaha will come in and out of segments as they change.