I did some basic research looking around and see that low-code/no-code platforms with the likes of mendix.com, microsoft powerapps, appian and others are quite matured platforms. I will not be surprised we start seeing low-code replacing traditional approach of building business applications
In some countries say like India, a freelancer can register as a one person business/one person company and all income treated as business income. This way your tax payable becomes based on income-business expenses similar to an LLC or corp.