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OnceStack — Curated Buy-Once Software Marketplace for the SaaS-Fatigued

The "SAASpocalypse" is real. B2B software ETFs have plunged over 21% year-to-date. Forbes reports companies are "shifting away from SaaS." The Guardian covered it. Saastr analyzed it. This isn't a fringe complaint — it's a structural market correction.

Score81/100
Apr 1, 2026
TAM
€380B — Global SaaS market spending (Gartner 2026), with growing portion seeking alternatives.
SAM
€12B — Estimated spend on perpetual-license, open-source, and buy-once alternatives by SMBs and individuals globally.
SOM
€1.2M — Year 1-2 capture via 500+ listed products × avg $200 price × 15% commission × 800 sales/month.
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The Problem

The "SAASpocalypse" is real. B2B software ETFs have plunged over 21% year-to-date. Forbes reports companies are "shifting away from SaaS." The Guardian covered it. Saastr analyzed it....

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