Those share options need excising, which probably incurs income tax on the allocation Vs strike price. Then the shares are only worth something to inheritors if

Those share options need excising, which probably incurs income tax on the allocation Vs strike price. Then the shares are only worth something to inheritors if that company is doing useful work for its customers over an extremely long period of time. That is likely far more valuable than the tax going towards paying off the interest for a year on some vote-buying spending that happened 20 years prior.