You don't seem to get it.
SBC Customer: Let's say I build a product using your latest SBC. Will it get updates after I bought it?
SBC Vendor: No
SBC Customer: Okay, but surely I can at least buy more in 2035?
SBC Vendor: No
SBC Customer: Why would anyone building a commercial product be interested in your particular SBC then?
SBC Vendor: We expect you to buy and then regret your purchase.