Elsevier, arbiter of knowledge acquisition?
Setting aside the fuss over who owns what, does the work, now retracted, stand in its own right as a worthy contribution to engineering pertaining to fluid flow? If so, the work must remain as part of citable literature.
The interposition of factors irrelevant to academic worth is easily taken to other ridiculous lengths. Just suppose the authors of a paper refer to other published works not subscribed to by their own institution's library. Further, suppose that rather than messing around with inter-library loan services, the authors read copies of the papers obtained via the esteemable unofficial Sci-Hub service. Under the extremely unlikely circumstance of the authors being found out as having wickedly undermined 'property rights', should their work be binned lest their example encourages other people to stray from the path of rectitude?
It's a simple fact that almost all proprietary software an academic could need is available from reliable unofficial sources. Ditto for academic papers and books. Moreover, these resources can easily be acquired whilst sitting in an armchair at home, and without jumping through hoops imposed at the behest of copyright rentiers upon institutions.
Globally, the bottle of knowledge (and broader culture too) has been uncorked. The genie is out. There is desperate rearguard action by discommoded believers in nebulous property rights. Disobedience is rampant and growing in extent. The Internet, together with its unstoppable darknets, is emancipating creative thinking. So-called AI looks set to be the final straw: properly constructed, AI offers the prospect of well annotated and cross-referenced stores of knowldge presided over by an articial entity acting as curator and subject-matter librarian.
Shifts in the focii of global economic power (e.g. towards BRICS) will enable questioning of ownership assumptions (physical and intellectual) nowadays in the West fossilised. A pragmatically decided accord will arise: one recognising creative prowess (thereby supporting and, when necessary, enforcing attribution), and simulatneously asserting citizens' 'rights' to freely access digitally encoded knowledge/culture, to apply knowldge garnered by others, and to derive from work by others.