>>10322543>Is it time for 3rd party to expand to other brandsIf you mean UNLICENSED 3rd parties, the reason why the market is uniquely big for TF is because Hasbro's official TF license has some non-compete clause preventing them from making transforming action figures, so you're limited to things like Flame Toys' model kits and Robosen's gimmicky robot thing.
This obviously doesn't apply to IPs owned by other companies and some of their licenses are really easy to acquire in China, like SNK's hence the Metal Slug transformer. There's no good justification for companies to go unlicensed for these other IPs you're thinking of. Think FPJ's 3P TFs vs Action Toys' 3P Machine Robo.