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Is not that you did it. Not even why you did it. The saddest thing is that you think your customers and developers are idiots and you provide untruthful explanation.
Of course you crippled it deliberately, perfectly knowing WHAT and WHY you do. You crippled it because you want it to become paid once again. You explanation : we want the development to be focused on other areas, with higher ROI is no explanation for crippling older software and not just letting it be, as it is....
Paid component? Why not. Its your right to get paid for your (good) work. But not this way. I will not buy this product of your total customer disrespect in future.