The extra features are practically irrelevant. When you're spending other people's money, $995 a year for an "enterprise license" is pretty much a no-brainer, regardless of the actual benefits. It'd cost more than that for legal to check that a FOSS license isn't going to present any issues down the road. $995 a year is chump change, even if all it gets you is explicit permission to use the code in a commercial product.
It's extremely difficult for most enterprise customers to donate to FOSS projects. Small donations just aren't part of the normal corporate decision-making process. Very few people within an organisation have the authority to just give away money. Spending relatively small amounts of money on products and services is an utterly mundane part of doing business. If you maintain a FOSS project and don't offer an "enterprise license" of some description, you're leaving money on the table.
It's extremely difficult for most enterprise customers to donate to FOSS projects. Small donations just aren't part of the normal corporate decision-making process. Very few people within an organisation have the authority to just give away money. Spending relatively small amounts of money on products and services is an utterly mundane part of doing business. If you maintain a FOSS project and don't offer an "enterprise license" of some description, you're leaving money on the table.