Resolved as a NO, if either:

• there's a quote in the media before the end of 2023 from a German government official, or a public transport corp spokesperson/executive, saying that "49-eur ticket" didn't manage to get traction, or "not a lot of people are using it"

• in the absence of such quote, there's any reliable information that it managed to get less than or "around" 1 million subscribers (for comparison, 9-eur ticket was sold 52 mln times over the summer. Unfortunately I couldn't easily find public data about Abo usage, but I will do a more serious search later). If it's a specific number, "around" means "< 1.2 mln", but I expect the quote to just say e.g. "around a mil"

Other resolution criteria are welcome. If "one million" seems too small or too big for a meaningful question, please LMK. I prefer the "quote" criteria but it might be too specific.