Do lodging-house owners not drink wine? Do vintners not vacation? People making luxury goods earn an income, often a very good income, and often they spend rather a lot of that income on luxury goods. It is perfectly possible to sustain an economy where the main productive output is luxury goods - it could be argued that many international cities are exactly that.
You seem to be under the misapprehension that the money a lawyer earns in exchange for his time is "real money", whereas the money earned by a fashion designer or an organic honey grower or someone who restores vingage fixed-gear bicycles is somehow not real money.
The economy only demands productivity. It cares not one jot whether that production is hamburger buns or brioche, whether it is kalashnikovs or designer garden tools. All that matters is that enough people will pay for what you do. It should be self-evident that artistry is highly marketable.
The real growth in the current economy is beauty. Apple is testament to that - their products are made by Quanta and Foxconn like everyone else's, but they are worth more by simple merit of being beautiful. Every year the metal and plastic and glass is worth less and the design and styling worth more, that's why we in the west no longer manufacture very much at all. The taste of Steve Jobs and the imagination of Jony Ive is worth more than any factory machine.
For every bohemian running a boutique B&B, we merely need 20 other people who make or do something that other people like. They don't have to wear a tie or work in a tall building, they only need to be productive.