Once the open source RISC-V CPU architecture makes high-end mobile hardware attainable at a low cost, the supply of non-Google and non-Apple phones will be substantially increased, and the market for open source mobile OS and app stores, which already exists, will see more development and will become as easy and apparent to access as the corporate players.
Discussion
No need for RISC-V the ARM licensing is not what drives the cost.
As nostr:npub1xtscya34g58tk0z605fvr788k263gsu6cy9x0mhnm87echrgufzsevkk5s about his amazing $150 brand name Android phone he's developing Damus on.
ARM licensing is still inflated in price by an artificial monopoly grant, however. Costs will be reduced, and competition will likely drive down the prices for alternative phones. I am not saying that ARM is the only issue, nor am I saying that it is completely impeding freeer phones from entering the market.
We can be certain, if praxeology is a good representation of the dynamics of the market, that there will be a downward pressure on prices and an increase in demand and volume of sales for alternatives coming from the development of RISC-V.