If the good guys know what they're doing, there are already subpoenas and search warrants in the works for the servers where Dominion's developer keep their source code. The software on the voting machines may self-destruct, but doing such a thing with the source code would be illegal destruction of evidence. Even if Hillary got away with destroying data, I don't think Dominion will.
Its not the source code - its a patch that uploads, does its thing, then destructs without a trace. Please see the bitchute video I linked for forensic analysis of just a small part of the situation with electronic voting. This is far more complex than the Hillary business.
Very hard to get anything from a company (Dominion) in bankruptcy, harder still when the company is in the EU, long with the servers. What they can get depends on what EU law or regulation governs such takings.
The EU is not a Trump supporter. So getting data that helps him is likely to to be a big FU from the EU.