HEC Enterprises and its successor Deep Purple (Overseas) are essentially bankrupt. Details are pretty scarce as to how and why did this happen, but both companies have been administered since January 19 by a firm called ReSolve Partners Limited with the goal of offering their business assets for sale.
HEC Enterprises and Deep Purple (Overseas) are the companies that managed the band between 1968 and 1976 (everything that happened post-reunion was managed by Thames Talent, who eventually acquired rights to the name Deep Purple circa 1987). Both HEC and DP(O) were owned 50/50 by Tony Edwards and John Coletta, with ownership after their deaths passing to their family members.
Both companies were sued in 2003 by Gillan, Glover, Lord and Paice for unpaid royalties. The resulting settlement didn’t include Blackmore, who made a separate claim that could be worth £710,000 for royalties not paid between 2007 and 2013 alone. So there’s a big hint as to what may have happened.
Thanks to Blabbermouth and Daniel Falaschi for the info.