Back in 2000s tech was about websites to share "I can has cheezeburger" photos and now we're literally in the middle of technological revolution that seemed like scifi less than 10 years ago. Not only AI, but biotech, space, fusion, robitics, even gussian splats. Solo software engineer can't create on of these now. But there's so much more invention of genuinely new, exciting new things going on that we can be involved with.
Yes, big corps suck. Always have, always existed, 20 and 40 years ago. Startups of 20 years ago have become big corps of today; now, new ones are in this "youthuful vigor" stage.