I'm looking to acquire a SaaS business given my experience in the industry but, from what I've heard, SBA lenders often have a hard time approving these loans. Can you help me understand why?

(And if my assumption is wrong and you've had success, would love to hear it!)

Is it that SaaS companies are asset light? That would make sense, but couldn't that be said of many smaller consulting firms, ad agencies, accounting firms, etc.?