Are you familiar with Project Ara? It has seen some delays, but it's a really ambitious fully modular design Motorola began and after Google sold Moto, they kept the division that developed Ara. Though news is slow after the Puerto Rico pilot got cancelled (probably because of PR's economic woes making it a less ideal test bed), AFAIK, it's still in the works. And they pulled together some really big name partners. It wasn't like a crowdfunded pipedream.