For companies operating across national boundaries it is much easier to adjust to one set of harmonised regulations and standards than to adapt their operations to accommodate multiple sets of national rules. That, after all, was the organising argument for the single market
There are some 30,000 lobbyists mostly operating in Brussels. Its not surprising therefore that a significant percentage of the rules and standards introduced are influenced by lobbyists. The result is that increasing levels of legislation disadvantage small companies.
The ft article is true: common standards are a necessity to enable a free open market without border checks or customs. Manufacturing to these common standards allows open access to 28.....or27 countries. The other side of that coin though is that the cost of satisfying those regulations can be prohibitive to small business.