ISAs weren't around back in 1999...
...but the bootcamp predatory education model sure was.
At least the 1999 bootcamps took your money one time. One group I remember them heavily targeting was recently separated military personnel. The US gives "GI Bill" education grants to partially pay for higher ed when you leave...so imagine being a slimy training outfit salivating at a guaranteed source of income. I'm also seeing "DevOps bootcamps" for traditional sysadmins who should know better, but are freaking out about automation and DevOps tools taking their jobs.