The rebreather thing seems a bit off-topic. Who knows what people will be using in 30+ years from now. Some new polymer or scrubber tech could easily revolutionize the industry.
As for teaching us newbs... I think tech/DIR makes a lot of sense. IMO, streamlining the gear selection and focusing on simplicity of operation makes learning easier and safer. Selling $2000 computers and double tanks is IMO a different issue than training people with a tech/DIR mindset. For that issue, I think it is consumer beware. Many shops are going to sell you what you can afford rather than what you need and that is not unique to diving.
As for owning the gear before or during OW or AOW, I think if you can afford it that it is a good thing. I personally like being educated on the gear I plan on using. I like that I am not going to get hit with rental fees and most importantly I like knowing where my gear has been and how well it has been serviced. There is a responsibility there, but I think it is a good one to have and understand.
$1500 for quality gear out the door is a bit tough but can be done. If you go used/grey market/online, it can be done easy enough but most LDS packages in that price range I have been offered have been deficient in one way or another.