I think it's the other way around. Makita is much more readily identified by the public, somewhat like:Huh. That's a shame. May be due to hubris, or just not wanting to support two brands. But brand equity will be lost, as well as the cache of a German mark. While Makita enjoys a strong brand, I don't think most people really equate "Makita" with OPE. I think they risk being perceived as a new entrant, or "also ran", if they really get serious about communicating their product in a mature market. (I don't think they've really devoted the resources to it, but I could be wrong.)
Makita = familiar name, known for quality tools. Japanese.
Dolmar = "Who?" German. The corollary is:
Japanese = quality stuff at a fair price.
German = perhaps better quality stuff but at a premium price.
Dolmar has near zero brand recognition, Makita has huge recognition and existing good reputation. They have a faster path to success by dropping Dolmar and keeping Makita.
Too, I'd lay money that Husqvarna could bring the Poulan brand back to prominence (rebranding exisiting models, near zero investment) much more readily than Makita/Dolmar could "enter" the market. Poulan already has market presence and old-time reputation that could easily be regained by offering modern real pro models. Poulan could be an easy #3 in two years. Quicker if they'd open a U.S. factory.