SMS compliance isn't something you figure out later. TCPA class action filings surged 95% year-over-year, with recent settlements exceeding $925 million and violations averaging $1,200 per illegal message (ActiveProspect, 2026). GDPR fines can reach 4% of global annual revenue. One poorly managed campaign can cost more than years of SMS revenue. Getting compliance right from day one isn't cautious. It's survival.