This seems to be more about moving manufacturing to use renewable electricity sources, which should be pretty easy (just get a different contract and pay slightly more).
I like your thought on this, but it really is not that simple, however great it would be if it was. You get into issues of energy density very quickly, and hard industries requires lots of heat, which the conversion rate for electricity is very inefficient, necessitating other forms of energy source. It's nowhere near as simple as just "switching provider", you can't smelt steel with solar power.
For the big 5 products, steel, plastic, cement, ammonia and icantrememberthelastone, you have a bunch of processes that require energy densities that are fundamentally different to residential tier appliances etc that can be provided by solar, wind etc. And for some of these products, which are integral to worldwide economies, there really aren't feasible replacements.
Electricity and power make up around 20% of global use, with manufacturing taking a portion of the pie closer to 30%. Migrating those systems is a very large hurdle, but I'll admit that whilst doing some investing around this recently, it seems to be a clear target by many organisations. Migrating traditional manufacturing processes for chemicals and base materials is going to have a massive impact on the overall situation.
In saying all this, the idea that we will be anything close to decarbonised by 2030 is a joke of epic proportions, the scale of the problem is mind boggling. Not that that means we shouldn't try, as it's a very necessary goal. But I actually think being more realistic about the scale of the issue is more likely to generate more interest in crafting fixes, as opposed to these bullshit goals that in many ways, make the problem sound solveable within the timeline. Which it isn't.