Ash I wonder if this fine will be enough of a deterrence to actually get them to stop. Not sure about this industry but I know for others, sometimes the fine is so small that it's easier to just pay it and keep doing what they were doing.
€100,000 per day sounds like a lot, I don't know how much the logging industry is worth, but I can't imagine the government makes more than that much per day just in licenses for logging.