Liquidity Risk: Paying in full ties up a large amount of capital in one asset, reducing financial flexibility and liquidity.

Opportunity Cost: The capital used for a lump sum payment could potentially yield higher returns if invested elsewhere. Although, at current rates that is probably unlikely.

Leverage: Mortgages allow for leverage, where you can control a large asset with a smaller initial investment.

Interest Rates: With historically low interest rates, financing can be more cost-effective than using cash. This is currently not true.

Diversification: Investing the money in a diversified portfolio can reduce risk compared to putting it all in a single property. See Leverage.

Tax Benefits: Mortgage interest payments can often be tax-deductible, which is not applicable when buying outright.

Sounds like you don’t know the story of core-js. Any popular open-source is basically unsustainable without profit.

https://github.com/zloirock/core-js/blob/master/docs/2023-02-14-so-whats-next.md