Too late in what sense? The problems time out and solve themselves?
Counter-argument: Wind and sun are unreliable
Counter-counter-argument: Why not build 10x the amount of wind and solar if it's so cheap, and automatically break the circuit when not needed?
Nobody builds ONLY solar or ONLY wind or ONLY hydro. Why should you?
Please stop repeating this...it's ridiculous.
My personal plan is 30KW (over the next few years) so I can get through like 4 days. And heck, a stormy day will still generate enough electricity.
In terms of "hard to believe", ask yourself why countries have not managed to roll out storage capacity to match the solar capacity? It's because solar is relying on fossil fuels or nuclear or hydro to be there when it's dark.
The sheer amount of electricity produced by intermittent renewables (solar & wind) while nobody wants it grows. Many markets have more and more negative prices timeframes, where the producer is ready to pay in order to get rid of it (gridpower network stability implies "production == consumption", any over/under-load is dangerous for it). However electricity prices are way, way up during under-production periods. This creates an already huge and growing incentive for storage.
Also add electric vehicles batteries (and, maybe one day, home batteries) which will more and more be usable to store overproduction thanks to smartgrid and various tricks ( such as https://en.wikipedia.org/wiki/Vehicle-to-grid).
The landscape is quickly (relatively to its huge inertia) changing.
And yet the storage is not being built in any meaningful sense. At best we have "ideas" but these have not been actually deployed at scale. People keep throwing out ideas, but when there is a crunch they fly in diesel generators or add gas peaker plants.
That alone should tell you how expensive the storage problem is to address. It's a very hard problem.
The reason grid storage hasn't been built is because batteries were too expensive, but more importantly, grid storage was never needed. It takes 5-10 years for new tech to see widespread deployments, and it's only been a few years that grid storage had been getting this investment.
you: This just isn't correct. There are dozens of pilot projects for novel grid storage
Really not sure what else needs to be said, so this is where I need to disengage.