Opportunities await if manufacturers will respond.
Over the years I've witnessed the ingenuity of North American hydronic heating manufacturers in creating products for perceived needs. I've seen products as unique as snap-on polymer covers for rusted fin-tube baseboard enclosures, bidirectional primary/secondary tees with internal baffles, pull-tie guns for attaching PEX tubing to welded wire reinforcing, and insulation board with knobs to hold the PEX tubing in place.
There's no doubt that manufacturers are always looking for opportunity and increased market share. That's exactly what they should do. It's part of what makes hydronics a truly dynamic field for those wanting to participate in cutting-edge design and product application.