Star Trek is fragmented as a franchise. Likewise its consumer base is fragmented making it difficult to cater to. It's pretty rare to find fans like myself who like ALL the series and films and are willing to buy product from every one of them.
Eaglemoss has it relatively easy. They're sticking to one thing, spaceships, and they're covering all eras. That's a lot harder to do when you've got multiple categories ranging from action figures and banks to electronic ships and role play.