Refill systems are not durable unless they are more profitable than single-use plastic

The problem

Most refill and zero-waste schemes are run as sustainability initiatives and depend on either consumer goodwill or regulation to survive. Both are fragile foundations.

Why goodwill and regulation are not enough

• Consumer goodwill is thin and unevenly distributed. It self-selects for affluent, routine-oriented, environmentally motivated buyers. The price-sensitive mass-market customer does not switch for ethics alone. A system resting on goodwill stays niche.
• Regulation can work but is fragile and uneven. It varies by country and jurisdiction, can be repealed or weakened, is fought by incumbents, and produces minimum-compliance behaviour rather than enthusiastic adoption.

What durability actually requires

A system that lasts must be more profitable for the companies running it than the status quo — so that it defends itself commercially and does not need to be propped up. If a refill model is merely break-even or "good PR," it is the first thing cut in a downturn.

This is a hard constraint, not a preference: the test for any proposed solution is whether a rational beauty or retail company would adopt and keep it on margin grounds alone. Where regulation helps, it should be framed as an accelerant, not the load-bearing structure.

Why it matters

This sub-issue exists to keep proposed solutions honest. "It reduces plastic" is necessary but not sufficient. "It reduces plastic AND makes more money for the operator than single-use bottles" is what makes a solution permanent.