Regarding number one above why is everything nearly always measured by the commercial viability yardstick? Surely there are many other outliers like Janice and I who could care less, who just write for our own enjoyment and are pleasantly surprised when on occasion others like it - but not driven by it. The rest of the write up sounds like good advice on how to write a good tune - enjoyed reading it.
Pardon me as the ole forum curmudgeon is feeling cantankerous this evening

Bud
That's fine but the same general principle still applies, doesn't it? Your song still needs to grab the listener immediately to keep them tuned in for the rest of the song. Simply remove all reference to "industry" and the balance remains true. In fact, just delete the first sentence completely and go with the remaining words.
I don't know how many times I, as a non-industry person, drop into a song forum online to listen to new music, select a song, and within the first line or two of the first verse, click back out because the song just isn't compelling enough to keep me interested enough to listen all the way through.