Trade and especially the shared European market required industry input which you might call lobbying. Regulations had to be homogenized to create a level playing field. To attack what matters European law makers needed lobby input. This happens all the time on a smaller scale with trade agreements. Think of the famous chlorine-washed chicken in the US situation. If a country prohibits this their chicken industry might want a for-export exemption when a trade deal with the US is made.
You also have lobbying that could be seen as genuinely good. Insurance companies lobbied for a lot of car safety standards and fire safety standards. (That said I'm libertarian enough that I don't actually see enforcement of standards that protect the occupant by law as positive but most people do)