"It's clear to me that the executive team at DoorDash understands how vulnerable they are as a company. DoorDash is also making the right moves by exploring opportunities. DoorDash had the potential to even become a grocery retailer at some point if they choose," Ladd wrote on LinkedIn. "Instacart also understands how vulnerable they are as a company. In addition to DoorDash, I've recommended that Uber, Facebook, or Google acquire Instacart."

Ladd has also previously suggested Gopuff, Urbx, and DaVinci Micro Fulfillment could be good acquisition targets for DoorDash. Gopuff, valued at $15 billion, on Thursday announced it was acquiring Dija, which operates approximately 40 microfulfillment centers across Europe, including in London, Paris, and Madrid.

"Will DoorDash acquire Instacart? It's possible. I believe a better question to ask is this: Should [DoorDash] acquire Instacart or Gopuff?" Ladd asked on LinkedIn. "If DoorDash acquires Urbx and DaVinci Micro Fulfillment, they don't need to acquire Instacart or Gopuff because DoorDash can create a better business model than what Instacart or Gopuff offers. However, if DoorDash doesn't acquire Urbx and DaVinci Micro Fulfillment, they should acquire Instacart or Gopuff. If I ran DoorDash, I would acquire Gopuff over Instacart, but DoorDash can't go wrong acquiring Instacart."

Online grocery shopping has skyrocketed 230% compared to pre-pandemic levels, but since the beginning of this year, it has cooled. Instacart is seeing that trend and looking at options to diversify its revenue. In July, the company announced it would start building microfulfillment warehouses in partnership with retailers.

"With the rapid adoption of online grocery shopping that's taken place over the last year, the grocery industry has experienced an accelerated transformation that's required retailers to reimagine their e-commerce footprint and explore new technologies to meet the needs of their customers," Instacart wrote on the company blog Thursday morning.

As COVID-19 took hold of the U.S., e-commerce grocery sales skyrocketed, although earlier this year they started to slide. In September 2020, research firm Mercatus released a survey that found 43% of shoppers shopped online in the previous six months and 40% were likely or very likely to continue doing so. Mercatus predicted online grocery sales will reach $250 billion by 2025, representing 21.5% of all grocery sales in the U.S. Since then, though, a slow decline has taken place. January 2021 was the peak sales month for online grocery sales, reaching $9.3 billion during the month, according to a Brick Meets Click/Mercatus Grocery Shopping Survey conducted Jan. 28-31. Sales in February started to fall, dropping 14% to $8 billion, and have remained on a slow decline since, as more Americans began leaving their homes. Sales fell 24% from January through June, according to research firm Bloomberg Second Measure.

Instacart has been making inroads into the grocery delivery wars. As of June 2021, Bloomberg Second Measure said that Walmart Grocery (NYSE:WMT) handles 48% of online grocery delivery sales and Instacart 45%. Shipt, which is owned by Target (NYSE:TGT), collected 6% of sales, followed by Peapod and FreshDirect with 1% each. The latter two are regional firms, with PeaPod operating primarily on the East Coast and FreshDirect in the New York City, Philadelphia, and Washington, D.C., areas.

Uber (NYSE:UBER) recently announced it was expanding its grocery delivery service to more than 400 cities. Launched in July 2020, the service will partner with Albertsons Co. Inc. (NYSE:ACI) and 1,200 of its grocery stores, including familiar names like Safeway, Jewel-Osco, ACME, Tom Thumb, and Randalls. With an even larger network in place, Uber hopes to cut grocery delivery times from days to hours — or even minutes. DoorDash this summer also announced its own collaboration with Albertsons and nearly 2,000 of its banner stores.