If you think the US unions are strong then you have not seen the European/German ones! I know somebody who wants VPN access to his company network but the unions would not allow it (they think the company would force him to work from home). This way he has no access to his email on business trips.
There are digital signal processors in production for years which go up to 333MHz, like ADI SHARCs.
BMW had one in their E70 X5 audio system. I am sure there are more examples.
I will check at work tomorrow but I am sure there are also higher speed C out there.