Combining leaves limits flavour variety

I have a regret when it comes to Japanese teas. My Japanese friends know it and share it. It is this: in Japan, few farmers produce finished tea. They are not usually set up to do this in terms of equipment. Most farmers focus on growing the best possible tea and harvesting it at the optimal time, but then they immediately sell the fresh leaves to co-operatives, who finish the production process. However, these co-operatives don’t keep the batches separate so they can process them individually. They put all the tea harvested by different farmers together. This results in a certain uniformity of flavour, whereas if each farmer took care of the production process right to the end, we would undoubtedly get a wider variety of flavours and aromas.