The expectation of E-cat market as priced by Woodford, as said in the contract is much above a billion $ of royalties, and much more of benefits.
investion 10Mn$ is 1% , so it means that if E-cat is real, with higher than 1% probability, then this was a good investment.
Refusing to pay 89Mn$ mean that the probability estimated is much below 10%.
This is finance way of mind.
the entrepreneur way of mind is rather, that you can accept to lose 10Mn$, but not 100Mn$ on something that seems possible but improbable.
the botom earth way of mind, is that if you signed for the technology of E-cat in exchange of 10.5Mn$ and you cannot make it work, then whatever is the report, you don't pay until it works.
now if you know how to build an E-cat that work, and the 1MW test is OK, or is a fraud, or fail miserably, or have bad performance, of is astoundingly successful, you just don't care, and pay your diva to have E-cat X/quark in your portfolio.