Commercially it would have made more sense to negotiate a royalty stream and use that to get a mortgage on the old Tag factory.
ARM, for example still makes a few pence out of the older ARM cores in budget phones and embedded devices, when they could have made more upfront by selling their IP.

Mark
G68, baby Genelecs, Humax Foxsat, Oppo+Vanity93, Toshiba HD-A35, Pioneer CLD-925 + Meridian 519, various other random bits and bobs
Got a black G08.2 you want to sell?