I think coral prices will continue to go up because of laws, logistics, and marketing.
Laws: export bans and stronger environmental protections laws. I think this is a good thing, but it's definitely a factor in increasing prices.
Logistics: there are major issues with shipping and supply chains right now, which is going to causing prices to go up. Companies pass the costs onto consumers, but don't pass the savings on when prices go back down, so I think this will be the new normal.
Marketing: as you say, people like to buy 'named' things. The problem is there's no standard, it can be hard to confirm it's the 'real' thing (leading to dilution), and that there's no clear delineation between a 'new' thing versus an existing morph. Given this it wouldn't surprise me to see named corals rise in price (see: Aussie gold torches, and the climbing price of dragon soul) and rebranding of existing corals.