Call me old school maybe, but I'm a fan of Anarcho Syndicalism:
https://en.wikipedia.org/wiki/Mondragon_Corporation
The Mondragon Corporation is a federation of worker cooperatives based in the Basque Country of Spain.
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In 2024, it employed 70,085 people across four areas of activity: finance, industry, retail, and knowledge,[1] with 30,660 workers in the Basque Country, 29,340 elsewhere in Spain, and approximately 10,000 abroad.[2] Co-operative News has described it as the world's largest worker co-operative federation, the largest employer in the Basque Country, and the fifth-largest private employer in Spain.[3]
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The corporation's companies manufacture consumer goods, capital goods, industrial components, products and systems for construction, and services. Services include:
Abantail: adaptive design optimisation
Alecop: engineering training
LKS Consultores: legal services
KREAN: architects and engineers
MCCTelecom: telecommunication engineering
Mondragon Lingua: translation and language schools
Mondragon Sistemas: automation, industrial computing, and telecommunications
Ondoan: turnkey projects in energy and environment
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Mondragon co-operatives share a humanist view of business and a philosophy of participation and solidarity. The culture is rooted in a shared mission and a defined set of principles, corporate values, and business policies.[22]
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Mondragon bases its culture on 10 basic co-operative principles: open admission, democratic organisation, the sovereignty of labour, instrumental and subordinate nature of capital, participatory management, payment solidarity, inter-cooperation, social transformation, universality, and education.[24]
The philosophy is complemented by four corporate values: co-operation (acting as owners and protagonists), participation (commitment to management), social responsibility (distribution of wealth based on solidarity), and innovation (continual renewal across all areas).[25]
These values are translated into basic objectives (customer focus, development, innovation, profitability, people in co-operation, and community involvement) and general policies approved by the Co-operative Congress, which feed into the four-year strategic plans and the annual business plans of the individual co-operatives, divisions, and the corporation as a whole.[26]
Wage regulation
At Mondragon, wage ratios between executive work and the field or factory work that earns a minimum wage are agreed by vote. The ratios range from 3:1 to 9:1 across cooperatives and average 5:1; the general manager of an average cooperative earns no more than five times the theoretical minimum wage paid in their cooperative. Most worker-owners do not earn the minimum wage because most jobs are classified at higher wage levels. The wage ratio of a cooperative is decided periodically by its worker-owners through a democratic vote.[27]
Personally, I think that the idea of 'abolish all hierarchy' is rather silly.
Instead, question and critique all hierarchy, and then use what you learn from that to design the most equitable system possible.
Mondragon is not perfect, but I would argue it is (at least in the west) the most well known functional antithesis to capitalist private ownership that actually literally works and produces complex things.