A general checklist for flags that software will enshittify:

• owned by publicly-traded company
• backed by VC or other expecting sources of funding
• product is closed-source
• company tries to circumvent open-source licensing of product (often for financial gain)
• product has transferred ownership to a different company (through monetary transaction or similar)
• product incorporates DRM
• organization that owns the product has a track record for bad behavior

On their own, not all of these flags are excellent indicators. Some are better than others in a vacuum. If you see a product start to check several of these flags, it might be time to jump ship early (to a fork or other competing project).