P.E.
I have been following closely energy developments since 1980. Based on that I have little trust in claims that rapid changes are possible, when big investors get interested. If no solutions exist, they don’t miraculously appear, when investors get interested.
Referring to another comment in this thread, nobody with any understanding of these issues thinks that the shortage will appear suddenly one morning, but that’s not required for the buildup of major problems. The problems may worsen within years, solving them may take decades. Perhaps the ratio of time scales in not ten, but three to five is likely and bad enough.