It would be great if they could have released this as an open source project for the community to maintain. Unfortunately there is a lack of good OSS circuit simulators with decent GUI interfaces.
They can't; it relies on libraries they paid for to make that they don't have licenses to release the code for.
It would cost a lot of development time/money to replace all those parts, and require a legal review. It was this or nothing.
To be honest, if it's a EDA tool and has a decent GUI then I wouldn't trust it.
Before 07/04/2019, this was a $4500 simulator. It was first released in 1980, now in its 12th version.
Never heard about it. How does it compare to Spice ?
Unfortunate, founding a company called 'Spectrum Software' to provide software for 'Apple II' systems... Just two years before the ZX Spectrum made it to market. I think I would have been strongly tempted to rebrand, than persevere!