Most people don't spend enough on energy to make cost savings a big priority. With solar, there are tangible benefits right now if you know what you are doing but delaying your investments a few years may mean you get more benefits. Increasingly it is not the panel cost but everything around it (inverters, batteries, installation cost, etc.). All those things are subject to economies of scale. Basically, you get a delayed effect. In a few years it will go from cheaper to way cheaper to magnitudes cheaper. At that point things get more urgent.

Another thing to consider is that supply and demand are not that well matched currently. Basically, there's no such thing as over production for batteries or solar panels currently and even installation is bottle-necked on availability of people to do that. That reflects in the pricing as well.

IMHO, the biggest change with solar is that energy cost goes from a variable cost to basically a fixed cost (one time investment in batteries + panels) + variable revenue (from selling excess energy) + variable cost for when your panels don't deliver enough juice. The market is still adapting to this and e.g. the ease of selling excess energy varies between markets.

Some companies are going to get more benefit than others. E.g. any companies operating vehicles will probably want to switch to EV. At that point charging them with their own solar panels becomes attractive; especially when combined with vehicle to grid revenue.