What exactly do you have in mind? The large companies I've worked at had book subscriptions, internal training courses, and would pay for school. Personally I don't see the point of any of it. For software engineering, the info you need is all online for free. You can go download e.g. graduate level CS courses on youtube. MIT OCW has been around for almost a quarter century now. IME no one's going to stop you from spending a couple hours a week of work time watching lectures (at least if you're fulltime). Now at least at my company, we have unlimited use of codex, which you can ask for help explaining things to you. I also don't really see how attending conferences relates to skill improvement. Meanwhile, I've been explicitly told by managers that spending half my time mentoring people sounds reasonable.

I can't understand what people are looking for when they talk about lack of investment into training for engineers. It's not the kind of job where someone can train you. It's like an executive complaining they aren't trained. You're the one who's supposed to be coming up with answers and making decisions. You need to spend time on self-motivated learning/discovering how to better do your work. Every company I've been at big or small assumes that's part of the job.