I have to agree with PowerNaudio. Your machines are works of art. I think that your instinct is good in that as much as we all would love to see a bigger machine I doubt people are really ready to pay for it. I doubt that once you get up to the size of other commercial vendors you could stay competitive cost wise. I don't know what the market is for a Super Deluxe router table. I don't see a lot of K2CNC machines, I suspect because they are just too expensive for the hobbyist. Sears sold tons of their POS Carvewright machines. As limited and ridiculous as they are, they hit a sweet spot price wise ($1500-$2000).
From reading the posts on this site over the last year or so, it appears to me that the Holly Grail for many hobbyist is a machine with a cutting area of 2x4 to 3x5 (at least a quarter sheet of plywood), with supported rails, rapids in the +100ipm range, that comes in a kit (assembly only, no cutting) or as a complete unit for sub $2,000. Anyone able and willing to pull this off would have a brisk business.
Your machines are somewhat on the other end of the spectrum, although I don't think there is anyone on this forum that doesn't want one of your machines!!!