IPL as a burden

[Forrest J. Cavalier III]

> If you would choose for example to develop upgrades for IPLed software
> and market it under whatever business model, you are free to do so. All
> that IPL requires is, that the company running the software sticks to
> IPL and has eventually had a look at our price list. You are able to
> introduce your upgrades at the heart of any IPLed software since you
> have the source and you are legally entitled to do it.
> 

What happens to a future user's rights if intradat is out of 
business (i.e. no way to execute a license?)  

OSD principles safeguard these rights by sending all the rights 
(including right to run) along with each copy of the software.
Does the IPL?