“The result: most wines on the shelf start to taste the same.”

This is the result of debasement. Margins get thinner and thinner while the consumer has less money to spend and is looking for the cheapest tool to get the job done. This forces any business to optimize for efficiency which causes them to all use the same cheapest inputs and same cheapest process to produce the same product. It’s becoming super obvious in restaurants too. Everything just tastes the same because it is the same