Purely out of intellectual curiosity and the desire not to waste my own time and money on a format that doesn't provide any improvement, I'd like to know if there really is a difference and what that might be. Capitalist argument may work for a real marketplace, but I'm not running a marketplace in my listening room
Your ears and only them can cover your doubts, I am afraid ... I went thru the same process as many of us in here, starting from the SACD discs to today' DSD files.
Play one of the High-End Audiophile Demo discs from Denon for example, or a Jazz SACD from DMP label ... You will get blown away by the sound quality !
For serious listening I want the highest resolution possible and for me that is both DSD and high resolution PCM recorded SACDs.
IMHO, the ultimate question is : did you go thru the upgrade process from CD to SACD ?
If YES, as I did, you want today to continue enjoying the DSD format. (Possibly with a dedicated capable native playing DAC.)
If NOT, there is no reason for you to lose time and waste energies about DSD ...
High-resolution PCM and DSD formats are indistinguishable from one another, but that's me and my ears with my setups in my listening room ... I can say of my subjective preference for the DSD but that has zero value on the technical content of this discussion ...