I believe they have only scrubbed the large bank deposit (400k) for tourist visa only. Still required for 12 month Thai wife and even more for retirement visa. Can spend the money once you have the visa stamp in your passport. But you will need deposit again for next extension / renewal.
This is my view only after 25 years in Thaland and have had businesses.
If you get the business first you will probably not get married. If you get married first, then your business will not last too long nor your marriage. If you have a very large pot of money you might get both to work. Now is not the time to start a new business. Good luck.