[gottago]

Which incidentally IIRC is why Epic Gameshow used the formats it did, because that's the ones they owned, which is why they didn't do 3-2-1 for example,.

Although that argument falls down when it comes to Bullseye, though I suspect it the seeds were sown for that for the Gameshow Marathon years earlier.

Fremantle optioned the rights for Bullseye which is owned by a small company with no production arm attached. This meant they could use it for Epic but could also try and sell it as its own series (which they did try to do). Option rights only last a few years so they may have expired by now if they didn't want to renew if there wasn't any interest in the show. A similar example is Catchphrase which is optioned by STV. 

Name That Tune was optioned by Banijay at the time (not sure who owns it) but they couldn't sell it in the UK. They essentially allowed it to be 'borrowed' by Fremantle for Epic as a sort of broadcast pilot. If there was interest in Name That Tune after appearing on Epic then it was Banijay's to sell as a series so it was in their interest, not that it worked out in the end!

Otherwise everything was owned outright by Fremantle. It's not cheap to license specific shows for a series like this, the above two are special cases, so that's why they couldn't expand much further beyond the Fremantle catalogue for Epic and how they ended up having to bring back Child's Play of all shows!