There is money left because people were scared shitless after the SBA threatened criminal prosecution for misleading certifications. The problem is that issued a statement redefined the certification after the fact and made it much more strict and than when they were initially released. All of the sudden a bunch of people thought accepting the PPP funds would land them in Jail. Go to the reddit PPP or small business threads and you’ll see tons of people returning funds and expressing fear.
It’s important to note that the SBA issued its announcement after the public outrage of large companies receiving PPP. They have since back tracked and issued a blanket protection from audit for loans under $2M but the damage was done and the $130B hasn’t been touched since.
To be fair, this is mostly conjecture on your part. Reddit threads aren't a good way to get a handle on what millions of businesses of all different sizes are doing or why.
It's a survey selected by an independent factor - it's like a twitter thread, or local cafe gossip. It's not gonna hold up to a strong scrutiny but it's a valuable place to start.
It’s important to note that the SBA issued its announcement after the public outrage of large companies receiving PPP. They have since back tracked and issued a blanket protection from audit for loans under $2M but the damage was done and the $130B hasn’t been touched since.