Why did the Ecto get taken down so fast? Because it is a LEGO set. If there was another set that copied a LEGO set, I'll bet it would be taken down right away as well because LEGO would come after them. Why are the others up? Because no one has called them into question.
BTW, some copywrite issues by big, bad LEGO were already fought here in the USA. Between LEGO and Best-Lock, which merged with COBI in 2006, re: minifigures. Lawsuit was in 2019.
https://casetext.com/case/lego-v-best-lock-constr-toys-inc-2
Although this case was over minifigures (not specific likenesses, just the design itself and how it was similar to LEGO). I found this paragraph re: "copying" (see below) which I believe has been at the heart of this thread and which you (@Frank Brickowski) repeatedly ignore or dismiss. If the producer of the toy can prove without a doubt that they created an item without any source material, then there is no copywrite infringement.
Most of the products people have been pointing out in this thread are clearly examples of actual products from real life or from other toy companies. The likenesses that everyone keeps bringing up are such that at first glance, you immediately can identify the object. The producer must argue that they just happened to have designed that exact likeness without seeing the source material that it looks like. The products that have been pointed out by multiple German non-LEGO companies have so many "similarities" (as mentioned below as an infringement) that it is impossible to have not seen the source material. That IS a copywrite infringement. At least it is in the USA. Perhaps German law is different. I don't know and quite frankly I no longer care. *drops mic*
1. Actual Copying
To succeed on its infringement claim, Lego must show that Best-Lock actually copied Lego's minifigures. Boisson , 273 F.3d at 267. Occasionally, a case "presents the rare scenario where there is direct evidence of copying." Rogers v. Koons , 960 F.2d 301, 307 (2d Cir. 1992). More commonly, it is the conjunction of (1) access to the copyrighted work and (2) probative similarity that lead to the inference of actual copying. See Procter & Gamble Co. v. Colgate-Palmolive Co. , 199 F.3d 74, 77 (2d Cir. 1999) ; Muller v. Anderson , 501 F. App'x 81, 83 (2d Cir. 2012) ("A plaintiff may establish actual copying circumstantially by demonstrating (a) that the defendant had access to the copyrighted material and (b) that the two works exhibit ‘similarities probative of copying.’ ") (quoting Jorgensen v. Epic/Sony Records , 351 F.3d 46, 51 (2d Cir. 2003) ). That form of indirect proof requires "a showing of defendant's opportunity to come into contact with plaintiff's work and such similarities between the works which, under all the circumstances, make independent creation unlikely." Laureyssens , 964 F.2d at 140. i. Access to the Work