I think the missing piece of Trickle Down understanding is that ... Trickle down isn't aimed at making everybody rich ... its aimed at employment.
Its not aimed at lifting the quality of employment ... thats up to the individual and choices made.
As much as I hate Hockey's "... get a better job" or Ivanka Trumps "...find something new" ... boil these down to its simplest message ... its about choice. Do something about your circumstance or dont ... aspire or dont ... work hard or chose the easy path ... use your brains or dont.
Thats not a rich or poor thing, Left or Right thing ... its life. Is this part of trickle down ??? I think it is from a psychological point of view,
More practically, think about all those Cafes (Hospitality in general. Tourism is a fantastic example of trickle down), Personal trainers, Gym providers, cleaners, tatoo artists, landscapers/gardeners, pool cleaners, strata providers, Tradies, kitchen businesses, Bicycle Workshops (not retail but workshop specific), nail saloons, Massage places, Physios, Vets ... Fucking Vets and Gyms are my pet peeves (think about all the real estate these fuckers take up and drive up rents)
Thinking Sydney ... specifically Financial Services ... all those buggers with solid incomes ... by no means do they all think they are rich ... thats the trickle down ... think about the number of cafes and or coffee specific businesses in the CBD, now versus 20 years ago. Thats from them ... How many of you have cleaners ... go to the Gym ... have tatoos ... have renovated or put in a new kitchen or bathroom in the last 5 years (think about your parents, how many renos did you live through as a kid ... zip, maybe 1) ... think about the number of people in super cars ... they can't all be bankers, billionaires and drug dealers. Thats trickle down ... you are trickle down.
My next door neighbours are Chinese ... I dont really talk to them really ... so take the following as poetic license ... they work long fucking hours, usually gone before 6am and back around 9pm ... not sure if its 7 days a week but seems like it ... I believe they are laundry people for restaurants ... or sex traffickers

based purely on the dark tint and bars on the back windows of their SLWB Hiace ... Beamers and Mercs applenty, two story house in the inner west ... all anecdotal I know ... but thats trickle down and its also hard graft. Immigrants are a fantastic example of trickle down ... they are willing to eat shit, work hard, start a business, all usually to offer a service to support your consumption in the majority.
But as we have seen, all these fuckers above are the first to get smashed as we tighten belts and become more spend conscious. This highlights trickle down relationships in reverse per se ... in my mind.
In Summary
Think broader on what trickle down is and where it actually originates from.
If you think you aren't benefiting from trickle down then you have a choice to make.
edit: procrastination is bad ... I made the wrong choice