Why didn't I sell my vinyl rig?

Based on equipment for both sources, I'd expect comparison to be much closer. I can't see anything that stands out as great liability in either. I do know the XP27 is standout phono, was going to be my choice for phono until nice deal on Thoress phono came along. Network improvements are possible but unlikely to close the gulf you're speaking of. You may have to upgrade to top tier streamer to bridge gulf, you'd have to go here in order to beat what is already nice streaming setup.

I find my vinyl rig sounds better but not by a large margin. I also have more money in my vinyl rig. I wonder if I spent equally on the digital side if it would even out . I use digital merely for the convenience and accessibility. I enjoy vinyl much more. 

You're right about cost difference.  I recently upgraded my entire vinyl setup along with the digital.  Spent 3 times as much on vinyl.  Found the greatest improvement with the DAC. It might be that a DCS based digital system, for example, could take it to a more competitive position. On the other hand many great recordings on vinyl just "feel" better with more energy and emotion.  On the other hand my ears were "weaned" on vinyl over 60 years ago.  Perhaps that's the difference?

Go 10g with your transceivers for your FMC and you will be there. 

I use digital streaming about 95% of the time out of convenience. IMHO the best vinyl rigs still sound better than the best digital ones. However, digital has improved significantly in comparison to the early days of compact discs. In the past, I sold a few turntables only to eventually buy another one. I’ve had my Systemdek IIX (paid about $350 including a Grado Reference Platinum MM phono cartridge worth $350 on its own) for the past 15 years and enjoy having it around for the occasional times that I want to listen to vinyl. If you own a decent size record collection it probably makes sense to at least have a good quality affordable table, such as a Rega P2.