The Sun model of beefy server, ultra-thin client worked incredibly well and presaged the widespread adoption of virtualisation that eventually led to cloud computing and containerised software. Unfortunately that model made it very easy to undercut their prices using commodity hardware; I managed a Solaris/Sun Ray network c.2004 and it was cheaper to switch to Linux/Intel and buy spare hardware to keep in a cupboard “just in case” than to keep the Sun network going through its support contract.