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I guess this argument makes sense if you're prepared to be the tin-foil-hat guy with a computer totally de-networked, chugging along hoping every component holds out so you don't need a new node lock for $300, aching along with what will be uncompetitive, ancient software forever. You think you have perpetual OS support? What happens when Microsoft sunsets the version of Windows your $20k CAD/CAM investment is locked into? Wanna change computers? That'll be a $300 fee to switch the node lock. Don't forget, you stop paying maintenance on these things and the guys who make it will find a way to screw you. But the counter argument is that it takes like 15 years of subscription to start breaking even with the upfront capital cost of some of this stuff.
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