It's baffling that SE hasn't yes introduced solutions like:

1) You can sell a max of X items on the MB at any given moment (additional retainers should be for inventory space and ventures only);
2) Set a cap of X units for every stack of consumables sold (20 pots, 20 foods and so on);
3) Set a cap for the daily number of price adjustments you can do.

Indeed crafting is dead. You can't compete with bots on activities that require low or no skill and adaptability and can be fully automatized once you reach certain thresholds of parameters.