I doubt that is true, do you have numbers for this claim? I see many companies founding limited structures (UG or GmbH) to have avoid maximum personal risk. It can be done with just 1€ of capital.
That paper is a bit dated, and in German, but still the general assumption that most start-ups are poor remains true for Europe, not only Germany. https://www.destatis.de/DE/Publikationen/WirtschaftStatistik...
What is true though, a UG (e.g. Ltd), is an alternative to GmbH in terms of liability and capital. The 1 euro capital is a joke, imho. Because no sane credit institute would lend you money when they see your tiny liability investment. However, it is possible to make your business legal and profitable, and then borrow some money. But, honestly, starting with literally nothing is like starting a new game at maximum difficulty and perma-death, and who does that in RL?