If you weren't using computers and programming between 1976 and 1984, you probably can't intuitively grasp how things actually were,
Nobody was advertising computers on prime-time TV much, and they certainly weren't advertising big-budget games and online services targeted at the mass market. The kids buying (or pestering their parents into buying) those early "home" computers were the nerds who'd seen them in electronics magazines etc. and read the reviews (which, at the time, used half of their column-inches to discuss how good they were for programming). Sure, there were kids who couldn't have a home computer because their family couldn't afford one, or because the Commodore PET at the orphanage had been stolen to pay for drugs... but at the time there were many, many kids who could have had a computer, if they'd made it a priority, but didn't because they weren't remotely interested in computers and Facebook hadn't been invented yet.
I got one mainly because I'd been hooked on programmable calculators and wanted to take the next step. To afford it, I flogged virtually every half-decent, non-essential possession I had (not claiming too much hardship here - at least I had the stuff to sell - point is it didn't just magically appear after a hint to Mum & Dad). Oh, and as for that "BASIC programming book" it was missing from the set of photocopied manuals I got with my Superboard II so I had to suss it out from a couple of examples, a list of keywords and a couple of pages of "Illustrating BASIC" serialised in a magazine that I had a couple of copies of (I did eventually find a copy of Kenemy & Kurtz in the school library - god knows how it got there - and that was a brilliant book). When you wrote programs you saved them to cassette tape and crossed your fingers. "Editing" code mainly consisted of completely re-typing the line you wanted to change - maybe your system had some sort of kludgey "line editor" to help. Later on, you got to save up money for things like an assembler, decent text editor, FORTH, Pascal and eventually C - the latter two being complete non-starters unless you had a floppy drive (which, at the time, cost more than the rest of the computer).
In short, not many kids in the late 70s or early 80s stumbled into programming because they stumbled onto something called BASIC on this box that they'd been given to play games on (not that you'd get a 1980 personal computer purely on the strength of a game of "Star Trek", "Hunt The Wampus" or a Scott Adams text adventure). Later, maybe, when the first generation of kids had written some games for them to play, but not then.
I remember, circa 1981, "acquiring" a copy of a new game that had (for the time) a massive advertising campaign consisting of quarter page adverts in colour in a computing magazine... it was a huge inspiration on the grounds that, (a) it was pretty crap, and (b) if they were prepared to publish that crap, they might publish my crap. So I threw together my own crappy game in a weekend and, sure enough, a few weeks later I was published and slightly richer: Never got to join the ranks of those teenage computer game millionaires who learned to drive in Ferraris, but I did stretch to a 70cc scooter. There were plenty of opportunities for anybody who could do simple programming at the time, and even those of us who didn't join the lucky few who hit the jackpot could, with a bit of application, make useful money. Certainly, my first computer was the last time I had to rely on the Bank of Mum & Dad for stuff I wanted.
Any kid who is genuinely interested in programming will put in the minimal effort to find the huge wealth of resources available today - far beyond what we could dream of in the 80s. ...however, they're unlikely to knock out a crappy computer game in a weekend and make instant money, or secure a well-paid job on the basis of 6 months of self-taught BASIC skills. Oh, you can write apps and, once in a while, someone will pull a "Flappy Bird" and go viral - but the odds of that are up there with winning the lottery (NB: I don't think Minecraft was a weekend job).
TLDNR: there is no problem with the availability of programming resources, and if kids can't find them then they're probably not motivated to learn coding - plus, we're not living in the 80s with a fledgling IT industry incubating in garages offering endless opportunities to self-taught programmers.