A lot of Acqui-hires are a choice between 98% chance of total failure vs. x% of their initial investment back. It's not a goal it's simply a way to cut their losses when the company is on their last legs.
This is true, but as has been pointed out repeatedly, even if a company faces a 98% chance of total failure, many investors would prefer they chase the 2% chance of success rather than recovery of X% of their investments. VC investments either win or they don't; salvage isn't interesting to them.