There's a perfectly rational reason companies are quietly testing on BSV without making a song and dance about it.
It's cheap.
If the project goes nowhere, they've spent next to nothing. They can run extensive testing, process large volumes of transactions, experiment with workflows, and collect real data for the price of a few coffees. You can do a hell of a lot of testing for ten dollars.
Try doing that on BTC.
But the bigger problem is that many of the things businesses actually want to do are treated as spam by the BTC crowd. Logistics records? Spam. EDI messages? Spam. Supply-chain data? Spam. Enterprise processes? Spam. Put anything on-chain other than moving coins between speculators and somebody starts screaming that you're abusing the network.
So why would businesses build on a system where their intended use case is already regarded as illegitimate?
They won't.
Businesses don't care about ideological purity tests. They care about whether the system performs the function they need at a price they can justify. If one network lets them test cheaply and process the data they actually need, while another calls their business model spam, the outcome is hardly mysterious.