VIA Rail Canada is replacing 2+2 Business setups on their corridor trains with the 2+1 it had on some other coaches. I think the rationale is that a lot of their travellers are solo and don't want to share space for various reasons, including confidential papers.
At the same time, it doesn't matter how comfy it is if you can't get there in time. It seems to me that IE and NIR prioritise commuter over Enterprise and a move to have the first Newry-Central and Newry-Connolly services become full length business oriented service is likely to be resisted.