About once a week we get the same question from a Korean-American business owner: "I built my site on Squarespace, do I really need a custom website?" The honest answer depends on three things — your current revenue, your bilingual needs, and whether you want to be discoverable by AI search engines like ChatGPT in 2026. We rebuilt 4 Korean-American businesses off Wix and Squarespace in the last 18 months and have the before/after GA4 and GSC data for each. Here is when DIY is the right call, when custom wins, and the exact crossover point.
Real 3-year TCO comparison (typical Korean restaurant/salon, $5K-50K/mo revenue)
- $432
Squarespace 3-year
$12/mo × 36
- $648
Wix Business 3-year
$18/mo × 36
- $15K
Next.js custom 3-year
$10-15K build + $30/mo hosting
- 2x
Lighthouse mobile
Next.js vs Wix/Squarespace
SEO performance benchmarks (real GSC data)
From our 4-migration sample: a Korean restaurant client on Wix was getting an average mobile Lighthouse Performance score of 31/100 before migration. After Next.js, the same site scored 92/100. Within 90 days, Google Search Console impressions for the site tripled. The pattern was consistent across all 4 migrations — between 2x and 4x impression growth within the first quarter post-migration. The driver is almost entirely mobile Core Web Vitals; Wix and Squarespace ship too much JavaScript for a typical $30 Android phone to handle quickly, and Google penalizes that.
Bilingual support reality check
Squarespace and Wix both have "multilingual" features. Both work for a single page or a small site. Neither does proper bilingual SEO. The specific gap: real bilingual SEO requires /en and /ko URL prefixes (or subdomains), proper hreflang declarations linking the two language versions, and the ability to write separate meta descriptions and titles per language. Squarespace ships a half-broken version of this. Wix outright doesn't. Next.js handles all of it because we write it ourselves.
KakaoTalk + Naver integration
Adding a KakaoTalk Channel button on Squarespace or Wix is awkward — you can paste a code block but it often breaks on mobile, and the styling fights the rest of the site. On Next.js, we ship it as a proper React component, including a floating bottom-right button on mobile that opens KakaoTalk natively. Same with Naver verification meta tags, KakaoPay if you ever need it, and Korean review widgets. All technically possible on Squarespace/Wix, none clean.
3-year TCO at $50K, $200K, $1M revenue
At $50K/year revenue (a brand-new Korean shop or a service-business side hustle), Squarespace at ~$144/year is correct. At $200K/year (a successful Korean salon, dental practice, or small restaurant), the math gets interesting — a $12K custom Next.js build pays for itself in 18-24 months through better SEO, faster mobile, and integrations the DIY platforms can't do. At $1M/year revenue (multi-location restaurant, growing professional practice), staying on Squarespace or Wix is costing you 30-50% in unrealized traffic. The math isn't subtle at that scale.
When DIY is the right call
Pick Squarespace or Wix if:
- You are launching a new business and need a URL up in 2 weeks
- You have under $5K/year revenue (still validating the idea)
- You have no bilingual needs (English-only or Korean-only)
- You do not need KakaoTalk + Naver + complex schema
- You are comfortable with a generic template look
Pick custom Next.js if:
- You are crossing $10K/month and need to scale
- You need a true bilingual site that ranks in both languages
- You want KakaoTalk + Naver + AI search citations
- You want a distinctive editorial brand (not a template)
- You are willing to invest $10-15K upfront for a 3-5 year asset
Migration realities (downtime, redirects, content)
Migration from Squarespace or Wix to Next.js is not as scary as it sounds, if you do redirects properly. Our standard process: export all content, map every old URL to a new one in a 301 redirect spreadsheet, build the Next.js site in parallel, switch DNS during a low-traffic hour, then submit both old and new URLs to Google Search Console. Total downtime: under 5 minutes. Total ranking loss: typically zero. We have seen the opposite — sites that gained 30-50% in impressions within 60 days post-migration purely from Core Web Vitals improvement.