There is no future in BC.
That's why no-one buys, or ever plays, older games on PC.
There are older games I would love to play on PC, some problems do exist for me to do so. a) I lost my 386 in some box b) Not all the floppies still read.
I guess GOG has really helped fill those voids though, so there is a system for people to do so if they want. I came across some floppies in the garage yesterday that I remember fondly, just checking GOG and I don't see them.
Console BC - I still play Crimsom Skies from time-to-time, so I am glad that was on 360.
Xbox One BC - largely I find this worthy due to the wealth of younger E rated games that will be worth playing in the near future (3 kids). The Rare Collection is great as well, and what a value really. I do see heavy use of the X1 BC, and I like how some titles actually play better oddly.
PS2 games - the only pain here for me currently is outputs available on that console are not available in my house unless I buy a converter thing. Have not looked too much into it.
PS3 - same as X1, if PS4 would do BC outside of the streaming solution there are games I would happily play every few years. An R&C collection would be rather cool though.
I guess I was never really upset about the lack of BC going into the new generation, never a deal breaker. However, it is great to have and it helps extend the investment already made. I don't really remember caring much for BC on the playstation side, could be I have the consoles or really still boils down to what hurts my hands the most. I freely admit I lean towards one device due to comfort, and would not mind something closer in size to the old Duke.
So that is my messy take on things, and I will agree that this could help sales for X1. It will be interesting to watch, and the way the website is marketing things I bet the drive-by consumer might be confused enough to think it is already available. So an uptick in sales could happen soon. Nothing impressive on Amazon anyway.