Sure, I get that: when zero risk returns are low (or zero), investors must take on more risk.
I don't think this explains why the "good times are over" however. I think that is more related to supply / demand. Supply was low for a while as tech was seen as a dead-end in the early 0s due to outsourcing. In the mid 2010s the opposite was true - tech was seen as essentially the only viable career so lots of people went into it. Now we have the perfect storm of natural oversupply and the threat of AI.
I think the situation will eventually reverse but it will take quite a while.
I don't think this explains why the "good times are over" however. I think that is more related to supply / demand. Supply was low for a while as tech was seen as a dead-end in the early 0s due to outsourcing. In the mid 2010s the opposite was true - tech was seen as essentially the only viable career so lots of people went into it. Now we have the perfect storm of natural oversupply and the threat of AI.
I think the situation will eventually reverse but it will take quite a while.