>It's a strange feeling, like 5 years of my life just evaporated.

To quote Roy Batty, "All those moments will be lost in time, like tears in rain."

If there's anything I've noticed in this industry, it's that abstractions tend to outlive their origins. For instance, back in the 80s the Unix systems my workplace used (and subsequently, many of the applications they ran) had an 8 character max username length, and although those old Unix boxes (and their vendors) are long gone, we're still given 8 character usernames since nobody wants to find out the hard way that there still are some applications that depend on an 8 character max or which truncate longer usernames to 8 characters.

If you want to make a lasting impact on an industry but you weren't able to get in on the ground floor, your best bet is to get into advanced R&D, whether at a major hardware company or in academia. Anywhere else and your knowledge will either be wasted because nobody cares or it will be siloed off because the company will never open-source the tech you pioneered (and someone else will likely take the credit for it later on when they create an open-source equivalent).